31071020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21881}}^1$

素因数の和:21961

約数の個数: 24

約数和(自身を含む): 66171168

約数和(自身を除く): 35100148

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 21881, 43762, 87524, 109405, 218810, 437620, 1553551, 3107102, 6214204, 7767755, 15535510, 31071020]

約数ペア:

[(1, 31071020), (2, 15535510), (4, 7767755), (5, 6214204), (10, 3107102), (20, 1553551), (71, 437620), (142, 218810), (284, 109405), (355, 87524), (710, 43762), (1420, 21881)]