64720540

素因数分解:

$2^2\times 5^1\times {\mathrm{613}}^1\times {\mathrm{5279}}^1$

素因数の和:5901

約数の個数: 24

約数和(自身を含む): 136160640

約数和(自身を除く): 71440100

約数列:

[1, 2, 4, 5, 10, 20, 613, 1226, 2452, 3065, 5279, 6130, 10558, 12260, 21116, 26395, 52790, 105580, 3236027, 6472054, 12944108, 16180135, 32360270, 64720540]

約数ペア:

[(1, 64720540), (2, 32360270), (4, 16180135), (5, 12944108), (10, 6472054), (20, 3236027), (613, 105580), (1226, 52790), (2452, 26395), (3065, 21116), (5279, 12260), (6130, 10558)]