20217705

素因数分解:

$3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{8269}}^1$

素因数の和:8440

約数の個数: 16

約数和(自身を含む): 32550720

約数和(自身を除く): 12333015

約数列:

[1, 3, 5, 15, 163, 489, 815, 2445, 8269, 24807, 41345, 124035, 1347847, 4043541, 6739235, 20217705]

約数ペア:

[(1, 20217705), (3, 6739235), (5, 4043541), (15, 1347847), (163, 124035), (489, 41345), (815, 24807), (2445, 8269)]