12420740

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{8747}}^1$

素因数の和:8827

約数の個数: 24

約数和(自身を含む): 26453952

約数和(自身を除く): 14033212

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 8747, 17494, 34988, 43735, 87470, 174940, 621037, 1242074, 2484148, 3105185, 6210370, 12420740]

約数ペア:

[(1, 12420740), (2, 6210370), (4, 3105185), (5, 2484148), (10, 1242074), (20, 621037), (71, 174940), (142, 87470), (284, 43735), (355, 34988), (710, 17494), (1420, 8747)]