21668739

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{227}}^1\times {\mathrm{677}}^1$

素因数の和:954

約数の個数: 16

約数和(自身を含む): 29680128

約数和(自身を除く): 8011389

約数列:

[1, 3, 47, 141, 227, 677, 681, 2031, 10669, 31819, 32007, 95457, 153679, 461037, 7222913, 21668739]

約数ペア:

[(1, 21668739), (3, 7222913), (47, 461037), (141, 153679), (227, 95457), (677, 32007), (681, 31819), (2031, 10669)]