40520920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:209

約数の個数: 128

約数和(自身を含む): 108345600

約数和(自身を除く): 67824680

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 37, 38, 40, 44, 55, 74, 76, 88, 95, 110, 131, 148, 152, 185, 190, 209, 220, 262, 296, 370, 380, 407, 418, 440, 524, 655, 703, 740, 760, 814, 836, 1045, 1048, 1310, 1406, 1441, 1480, 1628, 1672, 2035, 2090, 2489, 2620, 2812, 2882, 3256, 3515, 4070, 4180, 4847, 4978, 5240, 5624, 5764, 7030, 7205, 7733, 8140, 8360, 9694, 9956, 11528, 12445, 14060, 14410, 15466, 16280, 19388, 19912, 24235, 24890, 27379, 28120, 28820, 30932, 38665, 38776, 48470, 49780, 53317, 54758, 57640, 61864, 77330, 92093, 96940, 99560, 106634, 109516, 136895, 154660, 184186, 193880, 213268, 219032, 266585, 273790, 309320, 368372, 426536, 460465, 533170, 547580, 736744, 920930, 1013023, 1066340, 1095160, 1841860, 2026046, 2132680, 3683720, 4052092, 5065115, 8104184, 10130230, 20260460, 40520920]

約数ペア:

[(1, 40520920), (2, 20260460), (4, 10130230), (5, 8104184), (8, 5065115), (10, 4052092), (11, 3683720), (19, 2132680), (20, 2026046), (22, 1841860), (37, 1095160), (38, 1066340), (40, 1013023), (44, 920930), (55, 736744), (74, 547580), (76, 533170), (88, 460465), (95, 426536), (110, 368372), (131, 309320), (148, 273790), (152, 266585), (185, 219032), (190, 213268), (209, 193880), (220, 184186), (262, 154660), (296, 136895), (370, 109516), (380, 106634), (407, 99560), (418, 96940), (440, 92093), (524, 77330), (655, 61864), (703, 57640), (740, 54758), (760, 53317), (814, 49780), (836, 48470), (1045, 38776), (1048, 38665), (1310, 30932), (1406, 28820), (1441, 28120), (1480, 27379), (1628, 24890), (1672, 24235), (2035, 19912), (2090, 19388), (2489, 16280), (2620, 15466), (2812, 14410), (2882, 14060), (3256, 12445), (3515, 11528), (4070, 9956), (4180, 9694), (4847, 8360), (4978, 8140), (5240, 7733), (5624, 7205), (5764, 7030)]