218986720

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:644

約数の個数: 96

約数和(自身を含む): 539856576

約数和(自身を除く): 320869856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 71, 74, 80, 142, 148, 160, 185, 284, 296, 355, 370, 521, 568, 592, 710, 740, 1042, 1136, 1184, 1420, 1480, 2084, 2272, 2605, 2627, 2840, 2960, 4168, 5210, 5254, 5680, 5920, 8336, 10420, 10508, 11360, 13135, 16672, 19277, 20840, 21016, 26270, 36991, 38554, 41680, 42032, 52540, 73982, 77108, 83360, 84064, 96385, 105080, 147964, 154216, 184955, 192770, 210160, 295928, 308432, 369910, 385540, 420320, 591856, 616864, 739820, 771080, 1183712, 1368667, 1479640, 1542160, 2737334, 2959280, 3084320, 5474668, 5918560, 6843335, 10949336, 13686670, 21898672, 27373340, 43797344, 54746680, 109493360, 218986720]

約数ペア:

[(1, 218986720), (2, 109493360), (4, 54746680), (5, 43797344), (8, 27373340), (10, 21898672), (16, 13686670), (20, 10949336), (32, 6843335), (37, 5918560), (40, 5474668), (71, 3084320), (74, 2959280), (80, 2737334), (142, 1542160), (148, 1479640), (160, 1368667), (185, 1183712), (284, 771080), (296, 739820), (355, 616864), (370, 591856), (521, 420320), (568, 385540), (592, 369910), (710, 308432), (740, 295928), (1042, 210160), (1136, 192770), (1184, 184955), (1420, 154216), (1480, 147964), (2084, 105080), (2272, 96385), (2605, 84064), (2627, 83360), (2840, 77108), (2960, 73982), (4168, 52540), (5210, 42032), (5254, 41680), (5680, 38554), (5920, 36991), (8336, 26270), (10420, 21016), (10508, 20840), (11360, 19277), (13135, 16672)]