131395940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{505369}}^1$

素因数の和:505391

約数の個数: 24

約数和(自身を含む): 297157560

約数和(自身を除く): 165761620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 505369, 1010738, 2021476, 2526845, 5053690, 6569797, 10107380, 13139594, 26279188, 32848985, 65697970, 131395940]

約数ペア:

[(1, 131395940), (2, 65697970), (4, 32848985), (5, 26279188), (10, 13139594), (13, 10107380), (20, 6569797), (26, 5053690), (52, 2526845), (65, 2021476), (130, 1010738), (260, 505369)]