155721620

素因数分解:

$2^2\times 5^1\times {\mathrm{2731}}^1\times {\mathrm{2851}}^1$

素因数の和:5591

約数の個数: 24

約数和(自身を含む): 327249888

約数和(自身を除く): 171528268

約数列:

[1, 2, 4, 5, 10, 20, 2731, 2851, 5462, 5702, 10924, 11404, 13655, 14255, 27310, 28510, 54620, 57020, 7786081, 15572162, 31144324, 38930405, 77860810, 155721620]

約数ペア:

[(1, 155721620), (2, 77860810), (4, 38930405), (5, 31144324), (10, 15572162), (20, 7786081), (2731, 57020), (2851, 54620), (5462, 28510), (5702, 27310), (10924, 14255), (11404, 13655)]