20463560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1$

素因数の和:135

約数の個数: 128

約数和(自身を含む): 54432000

約数和(自身を除く): 33968440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 29, 40, 46, 52, 58, 59, 65, 92, 104, 115, 116, 118, 130, 145, 184, 230, 232, 236, 260, 290, 295, 299, 377, 460, 472, 520, 580, 590, 598, 667, 754, 767, 920, 1160, 1180, 1196, 1334, 1357, 1495, 1508, 1534, 1711, 1885, 2360, 2392, 2668, 2714, 2990, 3016, 3068, 3335, 3422, 3770, 3835, 5336, 5428, 5980, 6136, 6670, 6785, 6844, 7540, 7670, 8555, 8671, 10856, 11960, 13340, 13570, 13688, 15080, 15340, 17110, 17342, 17641, 22243, 26680, 27140, 30680, 34220, 34684, 35282, 39353, 43355, 44486, 54280, 68440, 69368, 70564, 78706, 86710, 88205, 88972, 111215, 141128, 157412, 173420, 176410, 177944, 196765, 222430, 314824, 346840, 352820, 393530, 444860, 511589, 705640, 787060, 889720, 1023178, 1574120, 2046356, 2557945, 4092712, 5115890, 10231780, 20463560]

約数ペア:

[(1, 20463560), (2, 10231780), (4, 5115890), (5, 4092712), (8, 2557945), (10, 2046356), (13, 1574120), (20, 1023178), (23, 889720), (26, 787060), (29, 705640), (40, 511589), (46, 444860), (52, 393530), (58, 352820), (59, 346840), (65, 314824), (92, 222430), (104, 196765), (115, 177944), (116, 176410), (118, 173420), (130, 157412), (145, 141128), (184, 111215), (230, 88972), (232, 88205), (236, 86710), (260, 78706), (290, 70564), (295, 69368), (299, 68440), (377, 54280), (460, 44486), (472, 43355), (520, 39353), (580, 35282), (590, 34684), (598, 34220), (667, 30680), (754, 27140), (767, 26680), (920, 22243), (1160, 17641), (1180, 17342), (1196, 17110), (1334, 15340), (1357, 15080), (1495, 13688), (1508, 13570), (1534, 13340), (1711, 11960), (1885, 10856), (2360, 8671), (2392, 8555), (2668, 7670), (2714, 7540), (2990, 6844), (3016, 6785), (3068, 6670), (3335, 6136), (3422, 5980), (3770, 5428), (3835, 5336)]