21423507

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53693}}^1$

素因数の和:53722

約数の個数: 16

約数和(自身を含む): 34364160

約数和(自身を除く): 12940653

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 53693, 161079, 375851, 1020167, 1127553, 3060501, 7141169, 21423507]

約数ペア:

[(1, 21423507), (3, 7141169), (7, 3060501), (19, 1127553), (21, 1020167), (57, 375851), (133, 161079), (399, 53693)]