80851940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{310969}}^1$

素因数の和:310991

約数の個数: 24

約数和(自身を含む): 182850360

約数和(自身を除く): 101998420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 310969, 621938, 1243876, 1554845, 3109690, 4042597, 6219380, 8085194, 16170388, 20212985, 40425970, 80851940]

約数ペア:

[(1, 80851940), (2, 40425970), (4, 20212985), (5, 16170388), (10, 8085194), (13, 6219380), (20, 4042597), (26, 3109690), (52, 1554845), (65, 1243876), (130, 621938), (260, 310969)]