21721160

素因数分解:

$2^3\times 5^1\times {\mathrm{543029}}^1$

素因数の和:543040

約数の個数: 16

約数和(自身を含む): 48872700

約数和(自身を除く): 27151540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 543029, 1086058, 2172116, 2715145, 4344232, 5430290, 10860580, 21721160]

約数ペア:

[(1, 21721160), (2, 10860580), (4, 5430290), (5, 4344232), (8, 2715145), (10, 2172116), (20, 1086058), (40, 543029)]