21388556

素因数分解:

$2^2\times 7^1\times {\mathrm{461}}^1\times {\mathrm{1657}}^1$

素因数の和:2129

約数の個数: 24

約数和(自身を含む): 42895776

約数和(自身を除く): 21507220

約数列:

[1, 2, 4, 7, 14, 28, 461, 922, 1657, 1844, 3227, 3314, 6454, 6628, 11599, 12908, 23198, 46396, 763877, 1527754, 3055508, 5347139, 10694278, 21388556]

約数ペア:

[(1, 21388556), (2, 10694278), (4, 5347139), (7, 3055508), (14, 1527754), (28, 763877), (461, 46396), (922, 23198), (1657, 12908), (1844, 11599), (3227, 6628), (3314, 6454)]