40908880

素因数分解:

$2^4\times 5^1\times {\mathrm{511361}}^1$

素因数の和:511374

約数の個数: 20

約数和(自身を含む): 95113332

約数和(自身を除く): 54204452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 511361, 1022722, 2045444, 2556805, 4090888, 5113610, 8181776, 10227220, 20454440, 40908880]

約数ペア:

[(1, 40908880), (2, 20454440), (4, 10227220), (5, 8181776), (8, 5113610), (10, 4090888), (16, 2556805), (20, 2045444), (40, 1022722), (80, 511361)]