20517741660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{81439}}^1$

素因数の和:81500

約数の個数: 192

約数和(自身を含む): 68956876800

約数和(自身を除く): 48439135140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 19, 20, 26, 30, 34, 38, 39, 51, 52, 57, 60, 65, 68, 76, 78, 85, 95, 102, 114, 130, 156, 170, 190, 195, 204, 221, 228, 247, 255, 260, 285, 323, 340, 380, 390, 442, 494, 510, 570, 646, 663, 741, 780, 884, 969, 988, 1020, 1105, 1140, 1235, 1292, 1326, 1482, 1615, 1938, 2210, 2470, 2652, 2964, 3230, 3315, 3705, 3876, 4199, 4420, 4845, 4940, 6460, 6630, 7410, 8398, 9690, 12597, 13260, 14820, 16796, 19380, 20995, 25194, 41990, 50388, 62985, 81439, 83980, 125970, 162878, 244317, 251940, 325756, 407195, 488634, 814390, 977268, 1058707, 1221585, 1384463, 1547341, 1628780, 2117414, 2443170, 2768926, 3094682, 3176121, 4153389, 4234828, 4642023, 4886340, 5293535, 5537852, 6189364, 6352242, 6922315, 7736705, 8306778, 9284046, 10587070, 12704484, 13844630, 15473410, 15880605, 16613556, 17998019, 18568092, 20115433, 20766945, 21174140, 23210115, 26304797, 27689260, 30946820, 31761210, 35996038, 40230866, 41533890, 46420230, 52609594, 53994057, 60346299, 63522420, 71992076, 78914391, 80461732, 83067780, 89990095, 92840460, 100577165, 105219188, 107988114, 120692598, 131523985, 157828782, 179980190, 201154330, 215976228, 241385196, 263047970, 269970285, 301731495, 315657564, 341962361, 359960380, 394571955, 402308660, 526095940, 539940570, 603462990, 683924722, 789143910, 1025887083, 1079881140, 1206925980, 1367849444, 1578287820, 1709811805, 2051774166, 3419623610, 4103548332, 5129435415, 6839247220, 10258870830, 20517741660]

約数ペア:

[(1, 20517741660), (2, 10258870830), (3, 6839247220), (4, 5129435415), (5, 4103548332), (6, 3419623610), (10, 2051774166), (12, 1709811805), (13, 1578287820), (15, 1367849444), (17, 1206925980), (19, 1079881140), (20, 1025887083), (26, 789143910), (30, 683924722), (34, 603462990), (38, 539940570), (39, 526095940), (51, 402308660), (52, 394571955), (57, 359960380), (60, 341962361), (65, 315657564), (68, 301731495), (76, 269970285), (78, 263047970), (85, 241385196), (95, 215976228), (102, 201154330), (114, 179980190), (130, 157828782), (156, 131523985), (170, 120692598), (190, 107988114), (195, 105219188), (204, 100577165), (221, 92840460), (228, 89990095), (247, 83067780), (255, 80461732), (260, 78914391), (285, 71992076), (323, 63522420), (340, 60346299), (380, 53994057), (390, 52609594), (442, 46420230), (494, 41533890), (510, 40230866), (570, 35996038), (646, 31761210), (663, 30946820), (741, 27689260), (780, 26304797), (884, 23210115), (969, 21174140), (988, 20766945), (1020, 20115433), (1105, 18568092), (1140, 17998019), (1235, 16613556), (1292, 15880605), (1326, 15473410), (1482, 13844630), (1615, 12704484), (1938, 10587070), (2210, 9284046), (2470, 8306778), (2652, 7736705), (2964, 6922315), (3230, 6352242), (3315, 6189364), (3705, 5537852), (3876, 5293535), (4199, 4886340), (4420, 4642023), (4845, 4234828), (4940, 4153389), (6460, 3176121), (6630, 3094682), (7410, 2768926), (8398, 2443170), (9690, 2117414), (12597, 1628780), (13260, 1547341), (14820, 1384463), (16796, 1221585), (19380, 1058707), (20995, 977268), (25194, 814390), (41990, 488634), (50388, 407195), (62985, 325756), (81439, 251940), (83980, 244317), (125970, 162878)]