21317381880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{521}}^1\times {\mathrm{647}}^1$

素因数の和:1230

約数の個数: 256

約数和(自身を含む): 70140764160

約数和(自身を除く): 48823382280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 31, 34, 40, 51, 60, 62, 68, 85, 93, 102, 120, 124, 136, 155, 170, 186, 204, 248, 255, 310, 340, 372, 408, 465, 510, 521, 527, 620, 647, 680, 744, 930, 1020, 1042, 1054, 1240, 1294, 1563, 1581, 1860, 1941, 2040, 2084, 2108, 2588, 2605, 2635, 3126, 3162, 3235, 3720, 3882, 4168, 4216, 5176, 5210, 5270, 6252, 6324, 6470, 7764, 7815, 7905, 8857, 9705, 10420, 10540, 10999, 12504, 12648, 12940, 15528, 15630, 15810, 16151, 17714, 19410, 20057, 20840, 21080, 21998, 25880, 26571, 31260, 31620, 32302, 32997, 35428, 38820, 40114, 43996, 44285, 48453, 53142, 54995, 60171, 62520, 63240, 64604, 65994, 70856, 77640, 80228, 80755, 87992, 88570, 96906, 100285, 106284, 109990, 120342, 129208, 131988, 132855, 160456, 161510, 164985, 177140, 193812, 200570, 212568, 219980, 240684, 242265, 263976, 265710, 274567, 300855, 323020, 329970, 337087, 340969, 354280, 387624, 401140, 439960, 481368, 484530, 531420, 549134, 601710, 646040, 659940, 674174, 681938, 802280, 823701, 969060, 1011261, 1022907, 1062840, 1098268, 1203420, 1319880, 1348348, 1363876, 1372835, 1647402, 1685435, 1704845, 1938120, 2022522, 2045814, 2196536, 2406840, 2696696, 2727752, 2745670, 3294804, 3370870, 3409690, 4045044, 4091628, 4118505, 5056305, 5114535, 5491340, 5730479, 6589608, 6741740, 6819380, 8090088, 8183256, 8237010, 10112610, 10229070, 10449697, 10982680, 11460958, 13483480, 13638760, 16474020, 17191437, 20225220, 20458140, 20899394, 22921916, 28652395, 31349091, 32948040, 34382874, 40450440, 40916280, 41798788, 45843832, 52248485, 57304790, 62698182, 68765748, 83597576, 85957185, 104496970, 114609580, 125396364, 137531496, 156745455, 171914370, 177644849, 208993940, 229219160, 250792728, 313490910, 343828740, 355289698, 417987880, 532934547, 626981820, 687657480, 710579396, 888224245, 1065869094, 1253963640, 1421158792, 1776448490, 2131738188, 2664672735, 3552896980, 4263476376, 5329345470, 7105793960, 10658690940, 21317381880]

約数ペア:

[(1, 21317381880), (2, 10658690940), (3, 7105793960), (4, 5329345470), (5, 4263476376), (6, 3552896980), (8, 2664672735), (10, 2131738188), (12, 1776448490), (15, 1421158792), (17, 1253963640), (20, 1065869094), (24, 888224245), (30, 710579396), (31, 687657480), (34, 626981820), (40, 532934547), (51, 417987880), (60, 355289698), (62, 343828740), (68, 313490910), (85, 250792728), (93, 229219160), (102, 208993940), (120, 177644849), (124, 171914370), (136, 156745455), (155, 137531496), (170, 125396364), (186, 114609580), (204, 104496970), (248, 85957185), (255, 83597576), (310, 68765748), (340, 62698182), (372, 57304790), (408, 52248485), (465, 45843832), (510, 41798788), (521, 40916280), (527, 40450440), (620, 34382874), (647, 32948040), (680, 31349091), (744, 28652395), (930, 22921916), (1020, 20899394), (1042, 20458140), (1054, 20225220), (1240, 17191437), (1294, 16474020), (1563, 13638760), (1581, 13483480), (1860, 11460958), (1941, 10982680), (2040, 10449697), (2084, 10229070), (2108, 10112610), (2588, 8237010), (2605, 8183256), (2635, 8090088), (3126, 6819380), (3162, 6741740), (3235, 6589608), (3720, 5730479), (3882, 5491340), (4168, 5114535), (4216, 5056305), (5176, 4118505), (5210, 4091628), (5270, 4045044), (6252, 3409690), (6324, 3370870), (6470, 3294804), (7764, 2745670), (7815, 2727752), (7905, 2696696), (8857, 2406840), (9705, 2196536), (10420, 2045814), (10540, 2022522), (10999, 1938120), (12504, 1704845), (12648, 1685435), (12940, 1647402), (15528, 1372835), (15630, 1363876), (15810, 1348348), (16151, 1319880), (17714, 1203420), (19410, 1098268), (20057, 1062840), (20840, 1022907), (21080, 1011261), (21998, 969060), (25880, 823701), (26571, 802280), (31260, 681938), (31620, 674174), (32302, 659940), (32997, 646040), (35428, 601710), (38820, 549134), (40114, 531420), (43996, 484530), (44285, 481368), (48453, 439960), (53142, 401140), (54995, 387624), (60171, 354280), (62520, 340969), (63240, 337087), (64604, 329970), (65994, 323020), (70856, 300855), (77640, 274567), (80228, 265710), (80755, 263976), (87992, 242265), (88570, 240684), (96906, 219980), (100285, 212568), (106284, 200570), (109990, 193812), (120342, 177140), (129208, 164985), (131988, 161510), (132855, 160456)]