20020452880

素因数分解:

$2^4\times 5^1\times {\mathrm{1031}}^1\times {\mathrm{242731}}^1$

素因数の和:243775

約数の個数: 40

約数和(自身を含む): 46592892864

約数和(自身を除く): 26572439984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1031, 2062, 4124, 5155, 8248, 10310, 16496, 20620, 41240, 82480, 242731, 485462, 970924, 1213655, 1941848, 2427310, 3883696, 4854620, 9709240, 19418480, 250255661, 500511322, 1001022644, 1251278305, 2002045288, 2502556610, 4004090576, 5005113220, 10010226440, 20020452880]

約数ペア:

[(1, 20020452880), (2, 10010226440), (4, 5005113220), (5, 4004090576), (8, 2502556610), (10, 2002045288), (16, 1251278305), (20, 1001022644), (40, 500511322), (80, 250255661), (1031, 19418480), (2062, 9709240), (4124, 4854620), (5155, 3883696), (8248, 2427310), (10310, 1941848), (16496, 1213655), (20620, 970924), (41240, 485462), (82480, 242731)]