21864872

素因数分解:

$2^3\times {\mathrm{821}}^1\times {\mathrm{3329}}^1$

素因数の和:4156

約数の個数: 16

約数和(自身を含む): 41058900

約数和(自身を除く): 19194028

約数列:

[1, 2, 4, 8, 821, 1642, 3284, 3329, 6568, 6658, 13316, 26632, 2733109, 5466218, 10932436, 21864872]

約数ペア:

[(1, 21864872), (2, 10932436), (4, 5466218), (8, 2733109), (821, 26632), (1642, 13316), (3284, 6658), (3329, 6568)]