12520520

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{3517}}^1$

素因数の和:3617

約数の個数: 32

約数和(自身を含む): 28495800

約数和(自身を除く): 15975280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3517, 3560, 7034, 14068, 17585, 28136, 35170, 70340, 140680, 313013, 626026, 1252052, 1565065, 2504104, 3130130, 6260260, 12520520]

約数ペア:

[(1, 12520520), (2, 6260260), (4, 3130130), (5, 2504104), (8, 1565065), (10, 1252052), (20, 626026), (40, 313013), (89, 140680), (178, 70340), (356, 35170), (445, 28136), (712, 17585), (890, 14068), (1780, 7034), (3517, 3560)]