57978520

素因数分解:

$2^3\times 5^1\times {\mathrm{1109}}^1\times {\mathrm{1307}}^1$

素因数の和:2427

約数の個数: 32

約数和(自身を含む): 130669200

約数和(自身を除く): 72690680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1109, 1307, 2218, 2614, 4436, 5228, 5545, 6535, 8872, 10456, 11090, 13070, 22180, 26140, 44360, 52280, 1449463, 2898926, 5797852, 7247315, 11595704, 14494630, 28989260, 57978520]

約数ペア:

[(1, 57978520), (2, 28989260), (4, 14494630), (5, 11595704), (8, 7247315), (10, 5797852), (20, 2898926), (40, 1449463), (1109, 52280), (1307, 44360), (2218, 26140), (2614, 22180), (4436, 13070), (5228, 11090), (5545, 10456), (6535, 8872)]