20325680

素因数分解:

$2^4\times 5^1\times {\mathrm{254071}}^1$

素因数の和:254084

約数の個数: 20

約数和(自身を含む): 47257392

約数和(自身を除く): 26931712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254071, 508142, 1016284, 1270355, 2032568, 2540710, 4065136, 5081420, 10162840, 20325680]

約数ペア:

[(1, 20325680), (2, 10162840), (4, 5081420), (5, 4065136), (8, 2540710), (10, 2032568), (16, 1270355), (20, 1016284), (40, 508142), (80, 254071)]