21388627

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{839}}^1$

素因数の和:942

約数の個数: 16

約数和(自身を含む): 24131520

約数和(自身を除く): 2742893

約数列:

[1, 13, 37, 53, 481, 689, 839, 1961, 10907, 25493, 31043, 44467, 403559, 578071, 1645279, 21388627]

約数ペア:

[(1, 21388627), (13, 1645279), (37, 578071), (53, 403559), (481, 44467), (689, 31043), (839, 25493), (1961, 10907)]