20497515

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{13267}}^1$

素因数の和:13378

約数の個数: 16

約数和(自身を含む): 33116928

約数和(自身を除く): 12619413

約数列:

[1, 3, 5, 15, 103, 309, 515, 1545, 13267, 39801, 66335, 199005, 1366501, 4099503, 6832505, 20497515]

約数ペア:

[(1, 20497515), (3, 6832505), (5, 4099503), (15, 1366501), (103, 199005), (309, 66335), (515, 39801), (1545, 13267)]