123490520

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{9739}}^1$

素因数の和:10067

約数の個数: 32

約数和(自身を含む): 278758800

約数和(自身を除く): 155268280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 2536, 3170, 6340, 9739, 12680, 19478, 38956, 48695, 77912, 97390, 194780, 389560, 3087263, 6174526, 12349052, 15436315, 24698104, 30872630, 61745260, 123490520]

約数ペア:

[(1, 123490520), (2, 61745260), (4, 30872630), (5, 24698104), (8, 15436315), (10, 12349052), (20, 6174526), (40, 3087263), (317, 389560), (634, 194780), (1268, 97390), (1585, 77912), (2536, 48695), (3170, 38956), (6340, 19478), (9739, 12680)]