64545440

素因数分解:

$2^5\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3701}}^1$

素因数の和:3825

約数の個数: 48

約数和(自身を含む): 153929160

約数和(自身を除く): 89383720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 109, 160, 218, 436, 545, 872, 1090, 1744, 2180, 3488, 3701, 4360, 7402, 8720, 14804, 17440, 18505, 29608, 37010, 59216, 74020, 118432, 148040, 296080, 403409, 592160, 806818, 1613636, 2017045, 3227272, 4034090, 6454544, 8068180, 12909088, 16136360, 32272720, 64545440]

約数ペア:

[(1, 64545440), (2, 32272720), (4, 16136360), (5, 12909088), (8, 8068180), (10, 6454544), (16, 4034090), (20, 3227272), (32, 2017045), (40, 1613636), (80, 806818), (109, 592160), (160, 403409), (218, 296080), (436, 148040), (545, 118432), (872, 74020), (1090, 59216), (1744, 37010), (2180, 29608), (3488, 18505), (3701, 17440), (4360, 14804), (7402, 8720)]