31713800

素因数分解:

$2^3\times 5^2\times {\mathrm{257}}^1\times {\mathrm{617}}^1$

素因数の和:890

約数の個数: 48

約数和(自身を含む): 74141460

約数和(自身を除く): 42427660

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 257, 514, 617, 1028, 1234, 1285, 2056, 2468, 2570, 3085, 4936, 5140, 6170, 6425, 10280, 12340, 12850, 15425, 24680, 25700, 30850, 51400, 61700, 123400, 158569, 317138, 634276, 792845, 1268552, 1585690, 3171380, 3964225, 6342760, 7928450, 15856900, 31713800]

約数ペア:

[(1, 31713800), (2, 15856900), (4, 7928450), (5, 6342760), (8, 3964225), (10, 3171380), (20, 1585690), (25, 1268552), (40, 792845), (50, 634276), (100, 317138), (200, 158569), (257, 123400), (514, 61700), (617, 51400), (1028, 30850), (1234, 25700), (1285, 24680), (2056, 15425), (2468, 12850), (2570, 12340), (3085, 10280), (4936, 6425), (5140, 6170)]