21856710

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{728557}}^1$

素因数の和:728567

約数の個数: 16

約数和(自身を含む): 52456176

約数和(自身を除く): 30599466

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 728557, 1457114, 2185671, 3642785, 4371342, 7285570, 10928355, 21856710]

約数ペア:

[(1, 21856710), (2, 10928355), (3, 7285570), (5, 4371342), (6, 3642785), (10, 2185671), (15, 1457114), (30, 728557)]