64554040

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{7237}}^1$

素因数の和:7471

約数の個数: 32

約数和(自身を含む): 145918080

約数和(自身を除く): 81364040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 7237, 8920, 14474, 28948, 36185, 57896, 72370, 144740, 289480, 1613851, 3227702, 6455404, 8069255, 12910808, 16138510, 32277020, 64554040]

約数ペア:

[(1, 64554040), (2, 32277020), (4, 16138510), (5, 12910808), (8, 8069255), (10, 6455404), (20, 3227702), (40, 1613851), (223, 289480), (446, 144740), (892, 72370), (1115, 57896), (1784, 36185), (2230, 28948), (4460, 14474), (7237, 8920)]