31938520

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{2551}}^1$

素因数の和:2875

約数の個数: 32

約数和(自身を含む): 72119520

約数和(自身を除く): 40181000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2504, 2551, 3130, 5102, 6260, 10204, 12520, 12755, 20408, 25510, 51020, 102040, 798463, 1596926, 3193852, 3992315, 6387704, 7984630, 15969260, 31938520]

約数ペア:

[(1, 31938520), (2, 15969260), (4, 7984630), (5, 6387704), (8, 3992315), (10, 3193852), (20, 1596926), (40, 798463), (313, 102040), (626, 51020), (1252, 25510), (1565, 20408), (2504, 12755), (2551, 12520), (3130, 10204), (5102, 6260)]