21647992

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{142421}}^1$

素因数の和:142446

約数の個数: 16

約数和(自身を含む): 42726600

約数和(自身を除く): 21078608

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 142421, 284842, 569684, 1139368, 2705999, 5411998, 10823996, 21647992]

約数ペア:

[(1, 21647992), (2, 10823996), (4, 5411998), (8, 2705999), (19, 1139368), (38, 569684), (76, 284842), (152, 142421)]