64517620

素因数分解:

$2^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{7699}}^1$

素因数の和:8127

約数の個数: 24

約数和(自身を含む): 135828000

約数和(自身を除く): 71310380

約数列:

[1, 2, 4, 5, 10, 20, 419, 838, 1676, 2095, 4190, 7699, 8380, 15398, 30796, 38495, 76990, 153980, 3225881, 6451762, 12903524, 16129405, 32258810, 64517620]

約数ペア:

[(1, 64517620), (2, 32258810), (4, 16129405), (5, 12903524), (10, 6451762), (20, 3225881), (419, 153980), (838, 76990), (1676, 38495), (2095, 30796), (4190, 15398), (7699, 8380)]