51261340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197159}}^1$

素因数の和:197181

約数の個数: 24

約数和(自身を含む): 115930080

約数和(自身を除く): 64668740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 197159, 394318, 788636, 985795, 1971590, 2563067, 3943180, 5126134, 10252268, 12815335, 25630670, 51261340]

約数ペア:

[(1, 51261340), (2, 25630670), (4, 12815335), (5, 10252268), (10, 5126134), (13, 3943180), (20, 2563067), (26, 1971590), (52, 985795), (65, 788636), (130, 394318), (260, 197159)]