20174967560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{217309}}^1$

素因数の和:217542

約数の個数: 64

約数和(自身を含む): 49755297600

約数和(自身を除く): 29580330040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 211, 220, 422, 440, 844, 1055, 1688, 2110, 2321, 4220, 4642, 8440, 9284, 11605, 18568, 23210, 46420, 92840, 217309, 434618, 869236, 1086545, 1738472, 2173090, 2390399, 4346180, 4780798, 8692360, 9561596, 11951995, 19123192, 23903990, 45852199, 47807980, 91704398, 95615960, 183408796, 229260995, 366817592, 458521990, 504374189, 917043980, 1008748378, 1834087960, 2017496756, 2521870945, 4034993512, 5043741890, 10087483780, 20174967560]

約数ペア:

[(1, 20174967560), (2, 10087483780), (4, 5043741890), (5, 4034993512), (8, 2521870945), (10, 2017496756), (11, 1834087960), (20, 1008748378), (22, 917043980), (40, 504374189), (44, 458521990), (55, 366817592), (88, 229260995), (110, 183408796), (211, 95615960), (220, 91704398), (422, 47807980), (440, 45852199), (844, 23903990), (1055, 19123192), (1688, 11951995), (2110, 9561596), (2321, 8692360), (4220, 4780798), (4642, 4346180), (8440, 2390399), (9284, 2173090), (11605, 1738472), (18568, 1086545), (23210, 869236), (46420, 434618), (92840, 217309)]