31388080

素因数分解:

$2^4\times 5^1\times {\mathrm{392351}}^1$

素因数の和:392364

約数の個数: 20

約数和(自身を含む): 72977472

約数和(自身を除く): 41589392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 392351, 784702, 1569404, 1961755, 3138808, 3923510, 6277616, 7847020, 15694040, 31388080]

約数ペア:

[(1, 31388080), (2, 15694040), (4, 7847020), (5, 6277616), (8, 3923510), (10, 3138808), (16, 1961755), (20, 1569404), (40, 784702), (80, 392351)]