80440760

素因数分解:

$2^3\times 5^1\times {\mathrm{2011019}}^1$

素因数の和:2011030

約数の個数: 16

約数和(自身を含む): 180991800

約数和(自身を除く): 100551040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2011019, 4022038, 8044076, 10055095, 16088152, 20110190, 40220380, 80440760]

約数ペア:

[(1, 80440760), (2, 40220380), (4, 20110190), (5, 16088152), (8, 10055095), (10, 8044076), (20, 4022038), (40, 2011019)]