20975110

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9491}}^1$

素因数の和:9528

約数の個数: 32

約数和(自身を含む): 43055712

約数和(自身を除く): 22080602

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9491, 18982, 47455, 94910, 123383, 161347, 246766, 322694, 616915, 806735, 1233830, 1613470, 2097511, 4195022, 10487555, 20975110]

約数ペア:

[(1, 20975110), (2, 10487555), (5, 4195022), (10, 2097511), (13, 1613470), (17, 1233830), (26, 806735), (34, 616915), (65, 322694), (85, 246766), (130, 161347), (170, 123383), (221, 94910), (442, 47455), (1105, 18982), (2210, 9491)]