21053132

素因数分解:

$2^2\times {\mathrm{109}}^2\times {\mathrm{443}}^1$

素因数の和:665

約数の個数: 18

約数和(自身を含む): 37268028

約数和(自身を除く): 16214896

約数列:

[1, 2, 4, 109, 218, 436, 443, 886, 1772, 11881, 23762, 47524, 48287, 96574, 193148, 5263283, 10526566, 21053132]

約数ペア:

[(1, 21053132), (2, 10526566), (4, 5263283), (109, 193148), (218, 96574), (436, 48287), (443, 47524), (886, 23762), (1772, 11881)]