61277620

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{28109}}^1$

素因数の和:28227

約数の個数: 24

約数和(自身を含む): 129868200

約数和(自身を除く): 68590580

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 28109, 56218, 112436, 140545, 281090, 562180, 3063881, 6127762, 12255524, 15319405, 30638810, 61277620]

約数ペア:

[(1, 61277620), (2, 30638810), (4, 15319405), (5, 12255524), (10, 6127762), (20, 3063881), (109, 562180), (218, 281090), (436, 140545), (545, 112436), (1090, 56218), (2180, 28109)]