123459620

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{78139}}^1$

素因数の和:78227

約数の個数: 24

約数和(自身を含む): 262550400

約数和(自身を除く): 139090780

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 78139, 156278, 312556, 390695, 781390, 1562780, 6172981, 12345962, 24691924, 30864905, 61729810, 123459620]

約数ペア:

[(1, 123459620), (2, 61729810), (4, 30864905), (5, 24691924), (10, 12345962), (20, 6172981), (79, 1562780), (158, 781390), (316, 390695), (395, 312556), (790, 156278), (1580, 78139)]