21312140

素因数分解:

$2^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{7057}}^1$

素因数の和:7217

約数の個数: 24

約数和(自身を含む): 45058272

約数和(自身を除く): 23746132

約数列:

[1, 2, 4, 5, 10, 20, 151, 302, 604, 755, 1510, 3020, 7057, 14114, 28228, 35285, 70570, 141140, 1065607, 2131214, 4262428, 5328035, 10656070, 21312140]

約数ペア:

[(1, 21312140), (2, 10656070), (4, 5328035), (5, 4262428), (10, 2131214), (20, 1065607), (151, 141140), (302, 70570), (604, 35285), (755, 28228), (1510, 14114), (3020, 7057)]