81497860

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{36061}}^1$

素因数の和:36183

約数の個数: 24

約数和(自身を含む): 172664856

約数和(自身を除く): 91166996

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 36061, 72122, 144244, 180305, 360610, 721220, 4074893, 8149786, 16299572, 20374465, 40748930, 81497860]

約数ペア:

[(1, 81497860), (2, 40748930), (4, 20374465), (5, 16299572), (10, 8149786), (20, 4074893), (113, 721220), (226, 360610), (452, 180305), (565, 144244), (1130, 72122), (2260, 36061)]