31452920

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{5657}}^1$

素因数の和:5807

約数の個数: 32

約数和(自身を含む): 71290800

約数和(自身を除く): 39837880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 5657, 11314, 22628, 28285, 45256, 56570, 113140, 226280, 786323, 1572646, 3145292, 3931615, 6290584, 7863230, 15726460, 31452920]

約数ペア:

[(1, 31452920), (2, 15726460), (4, 7863230), (5, 6290584), (8, 3931615), (10, 3145292), (20, 1572646), (40, 786323), (139, 226280), (278, 113140), (556, 56570), (695, 45256), (1112, 28285), (1390, 22628), (2780, 11314), (5560, 5657)]