21608040580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{537781}}^1$

素因数の和:537845

約数の個数: 72

約数和(自身を含む): 54072904536

約数和(自身を除く): 32464863956

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 70, 82, 98, 140, 164, 196, 205, 245, 287, 410, 490, 574, 820, 980, 1148, 1435, 2009, 2870, 4018, 5740, 8036, 10045, 20090, 40180, 537781, 1075562, 2151124, 2688905, 3764467, 5377810, 7528934, 10755620, 15057868, 18822335, 22049021, 26351269, 37644670, 44098042, 52702538, 75289340, 88196084, 105405076, 110245105, 131756345, 154343147, 220490210, 263512690, 308686294, 440980420, 527025380, 617372588, 771715735, 1080402029, 1543431470, 2160804058, 3086862940, 4321608116, 5402010145, 10804020290, 21608040580]

約数ペア:

[(1, 21608040580), (2, 10804020290), (4, 5402010145), (5, 4321608116), (7, 3086862940), (10, 2160804058), (14, 1543431470), (20, 1080402029), (28, 771715735), (35, 617372588), (41, 527025380), (49, 440980420), (70, 308686294), (82, 263512690), (98, 220490210), (140, 154343147), (164, 131756345), (196, 110245105), (205, 105405076), (245, 88196084), (287, 75289340), (410, 52702538), (490, 44098042), (574, 37644670), (820, 26351269), (980, 22049021), (1148, 18822335), (1435, 15057868), (2009, 10755620), (2870, 7528934), (4018, 5377810), (5740, 3764467), (8036, 2688905), (10045, 2151124), (20090, 1075562), (40180, 537781)]