21814910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9871}}^1$

素因数の和:9908

約数の個数: 32

約数和(自身を含む): 44779392

約数和(自身を除く): 22964482

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 9871, 19742, 49355, 98710, 128323, 167807, 256646, 335614, 641615, 839035, 1283230, 1678070, 2181491, 4362982, 10907455, 21814910]

約数ペア:

[(1, 21814910), (2, 10907455), (5, 4362982), (10, 2181491), (13, 1678070), (17, 1283230), (26, 839035), (34, 641615), (65, 335614), (85, 256646), (130, 167807), (170, 128323), (221, 98710), (442, 49355), (1105, 19742), (2210, 9871)]