21656350

素因数分解:

$2^1\times 5^2\times {\mathrm{397}}^1\times {\mathrm{1091}}^1$

素因数の和:1500

約数の個数: 24

約数和(自身を含む): 40419288

約数和(自身を除く): 18762938

約数列:

[1, 2, 5, 10, 25, 50, 397, 794, 1091, 1985, 2182, 3970, 5455, 9925, 10910, 19850, 27275, 54550, 433127, 866254, 2165635, 4331270, 10828175, 21656350]

約数ペア:

[(1, 21656350), (2, 10828175), (5, 4331270), (10, 2165635), (25, 866254), (50, 433127), (397, 54550), (794, 27275), (1091, 19850), (1985, 10910), (2182, 9925), (3970, 5455)]