21215726

素因数分解:

$2^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{5851}}^1$

素因数の和:5904

約数の個数: 24

約数和(自身を含む): 38026296

約数和(自身を除く): 16810570

約数列:

[1, 2, 7, 14, 37, 49, 74, 98, 259, 518, 1813, 3626, 5851, 11702, 40957, 81914, 216487, 286699, 432974, 573398, 1515409, 3030818, 10607863, 21215726]

約数ペア:

[(1, 21215726), (2, 10607863), (7, 3030818), (14, 1515409), (37, 573398), (49, 432974), (74, 286699), (98, 216487), (259, 81914), (518, 40957), (1813, 11702), (3626, 5851)]