318590720

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1$

素因数の和:127

約数の個数: 216

約数和(自身を含む): 925539552

約数和(自身を除く): 606948832

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 37, 40, 56, 62, 64, 70, 74, 80, 112, 124, 128, 140, 148, 155, 160, 185, 217, 224, 248, 256, 259, 280, 296, 310, 320, 370, 434, 448, 496, 518, 560, 592, 620, 640, 740, 868, 896, 961, 992, 1036, 1085, 1120, 1147, 1184, 1240, 1280, 1295, 1480, 1736, 1792, 1922, 1984, 2072, 2170, 2240, 2294, 2368, 2480, 2590, 2960, 3472, 3844, 3968, 4144, 4340, 4480, 4588, 4736, 4805, 4960, 5180, 5735, 5920, 6727, 6944, 7688, 7936, 8029, 8288, 8680, 8960, 9176, 9472, 9610, 9920, 10360, 11470, 11840, 13454, 13888, 15376, 16058, 16576, 17360, 18352, 19220, 19840, 20720, 22940, 23680, 26908, 27776, 30752, 32116, 33152, 33635, 34720, 35557, 36704, 38440, 39680, 40145, 41440, 45880, 47360, 53816, 55552, 61504, 64232, 66304, 67270, 69440, 71114, 73408, 76880, 80290, 82880, 91760, 107632, 123008, 128464, 134540, 138880, 142228, 146816, 153760, 160580, 165760, 177785, 183520, 215264, 246016, 248899, 256928, 269080, 277760, 284456, 293632, 307520, 321160, 331520, 355570, 367040, 430528, 497798, 513856, 538160, 568912, 615040, 642320, 711140, 734080, 861056, 995596, 1027712, 1076320, 1137824, 1230080, 1244495, 1284640, 1422280, 1468160, 1722112, 1991192, 2055424, 2152640, 2275648, 2488990, 2569280, 2844560, 3982384, 4305280, 4551296, 4977980, 5138560, 5689120, 7964768, 8610560, 9102592, 9955960, 10277120, 11378240, 15929536, 19911920, 22756480, 31859072, 39823840, 45512960, 63718144, 79647680, 159295360, 318590720]

約数ペア:

[(1, 318590720), (2, 159295360), (4, 79647680), (5, 63718144), (7, 45512960), (8, 39823840), (10, 31859072), (14, 22756480), (16, 19911920), (20, 15929536), (28, 11378240), (31, 10277120), (32, 9955960), (35, 9102592), (37, 8610560), (40, 7964768), (56, 5689120), (62, 5138560), (64, 4977980), (70, 4551296), (74, 4305280), (80, 3982384), (112, 2844560), (124, 2569280), (128, 2488990), (140, 2275648), (148, 2152640), (155, 2055424), (160, 1991192), (185, 1722112), (217, 1468160), (224, 1422280), (248, 1284640), (256, 1244495), (259, 1230080), (280, 1137824), (296, 1076320), (310, 1027712), (320, 995596), (370, 861056), (434, 734080), (448, 711140), (496, 642320), (518, 615040), (560, 568912), (592, 538160), (620, 513856), (640, 497798), (740, 430528), (868, 367040), (896, 355570), (961, 331520), (992, 321160), (1036, 307520), (1085, 293632), (1120, 284456), (1147, 277760), (1184, 269080), (1240, 256928), (1280, 248899), (1295, 246016), (1480, 215264), (1736, 183520), (1792, 177785), (1922, 165760), (1984, 160580), (2072, 153760), (2170, 146816), (2240, 142228), (2294, 138880), (2368, 134540), (2480, 128464), (2590, 123008), (2960, 107632), (3472, 91760), (3844, 82880), (3968, 80290), (4144, 76880), (4340, 73408), (4480, 71114), (4588, 69440), (4736, 67270), (4805, 66304), (4960, 64232), (5180, 61504), (5735, 55552), (5920, 53816), (6727, 47360), (6944, 45880), (7688, 41440), (7936, 40145), (8029, 39680), (8288, 38440), (8680, 36704), (8960, 35557), (9176, 34720), (9472, 33635), (9610, 33152), (9920, 32116), (10360, 30752), (11470, 27776), (11840, 26908), (13454, 23680), (13888, 22940), (15376, 20720), (16058, 19840), (16576, 19220), (17360, 18352)]