19908265

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{5021}}^1$

素因数の和:5100

約数の個数: 16

約数和(自身を含む): 26154576

約数和(自身を除く): 6246311

約数列:

[1, 5, 13, 61, 65, 305, 793, 3965, 5021, 25105, 65273, 306281, 326365, 1531405, 3981653, 19908265]

約数ペア:

[(1, 19908265), (5, 3981653), (13, 1531405), (61, 326365), (65, 306281), (305, 65273), (793, 25105), (3965, 5021)]