81923740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{99907}}^1$

素因数の和:99957

約数の個数: 24

約数和(自身を含む): 176237712

約数和(自身を除く): 94313972

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 99907, 199814, 399628, 499535, 999070, 1998140, 4096187, 8192374, 16384748, 20480935, 40961870, 81923740]

約数ペア:

[(1, 81923740), (2, 40961870), (4, 20480935), (5, 16384748), (10, 8192374), (20, 4096187), (41, 1998140), (82, 999070), (164, 499535), (205, 399628), (410, 199814), (820, 99907)]