25525660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{443}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 55794816

約数和(自身を除く): 30269156

約数列:

[1, 2, 4, 5, 10, 20, 43, 67, 86, 134, 172, 215, 268, 335, 430, 443, 670, 860, 886, 1340, 1772, 2215, 2881, 4430, 5762, 8860, 11524, 14405, 19049, 28810, 29681, 38098, 57620, 59362, 76196, 95245, 118724, 148405, 190490, 296810, 380980, 593620, 1276283, 2552566, 5105132, 6381415, 12762830, 25525660]

約数ペア:

[(1, 25525660), (2, 12762830), (4, 6381415), (5, 5105132), (10, 2552566), (20, 1276283), (43, 593620), (67, 380980), (86, 296810), (134, 190490), (172, 148405), (215, 118724), (268, 95245), (335, 76196), (430, 59362), (443, 57620), (670, 38098), (860, 29681), (886, 28810), (1340, 19049), (1772, 14405), (2215, 11524), (2881, 8860), (4430, 5762)]