129128620

素因数分解:

$2^2\times 5^1\times {\mathrm{1787}}^1\times {\mathrm{3613}}^1$

素因数の和:5409

約数の個数: 24

約数和(自身を含む): 271396944

約数和(自身を除く): 142268324

約数列:

[1, 2, 4, 5, 10, 20, 1787, 3574, 3613, 7148, 7226, 8935, 14452, 17870, 18065, 35740, 36130, 72260, 6456431, 12912862, 25825724, 32282155, 64564310, 129128620]

約数ペア:

[(1, 129128620), (2, 64564310), (4, 32282155), (5, 25825724), (10, 12912862), (20, 6456431), (1787, 72260), (3574, 36130), (3613, 35740), (7148, 18065), (7226, 17870), (8935, 14452)]