213680

素因数分解:

$2^4\times 5^1\times {\mathrm{2671}}^1$

素因数の和:2684

約数の個数: 20

約数和(自身を含む): 496992

約数和(自身を除く): 283312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2671, 5342, 10684, 13355, 21368, 26710, 42736, 53420, 106840, 213680]

約数ペア:

[(1, 213680), (2, 106840), (4, 53420), (5, 42736), (8, 26710), (10, 21368), (16, 13355), (20, 10684), (40, 5342), (80, 2671)]