21158812

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{379}}^1\times {\mathrm{821}}^1$

素因数の和:1221

約数の個数: 24

約数和(自身を含む): 39357360

約数和(自身を除く): 18198548

約数列:

[1, 2, 4, 17, 34, 68, 379, 758, 821, 1516, 1642, 3284, 6443, 12886, 13957, 25772, 27914, 55828, 311159, 622318, 1244636, 5289703, 10579406, 21158812]

約数ペア:

[(1, 21158812), (2, 10579406), (4, 5289703), (17, 1244636), (34, 622318), (68, 311159), (379, 55828), (758, 27914), (821, 25772), (1516, 13957), (1642, 12886), (3284, 6443)]