12657220

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{4831}}^1$

素因数の和:4971

約数の個数: 24

約数和(自身を含む): 26788608

約数和(自身を除く): 14131388

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 4831, 9662, 19324, 24155, 48310, 96620, 632861, 1265722, 2531444, 3164305, 6328610, 12657220]

約数ペア:

[(1, 12657220), (2, 6328610), (4, 3164305), (5, 2531444), (10, 1265722), (20, 632861), (131, 96620), (262, 48310), (524, 24155), (655, 19324), (1310, 9662), (2620, 4831)]