257606785

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{20551}}^1$

素因数の和:20688

約数の個数: 16

約数和(自身を含む): 325543680

約数和(自身を除く): 67936895

約数列:

[1, 5, 23, 109, 115, 545, 2507, 12535, 20551, 102755, 472673, 2240059, 2363365, 11200295, 51521357, 257606785]

約数ペア:

[(1, 257606785), (5, 51521357), (23, 11200295), (109, 2363365), (115, 2240059), (545, 472673), (2507, 102755), (12535, 20551)]