21561253

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{409}}^1\times {\mathrm{443}}^1$

素因数の和:876

約数の個数: 16

約数和(自身を含む): 26213760

約数和(自身を除く): 4652507

約数列:

[1, 7, 17, 119, 409, 443, 2863, 3101, 6953, 7531, 48671, 52717, 181187, 1268309, 3080179, 21561253]

約数ペア:

[(1, 21561253), (7, 3080179), (17, 1268309), (119, 181187), (409, 52717), (443, 48671), (2863, 7531), (3101, 6953)]