28091920

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1399}}^1$

素因数の和:1663

約数の個数: 40

約数和(自身を含む): 65620800

約数和(自身を除く): 37528880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1255, 1399, 2008, 2510, 2798, 4016, 5020, 5596, 6995, 10040, 11192, 13990, 20080, 22384, 27980, 55960, 111920, 351149, 702298, 1404596, 1755745, 2809192, 3511490, 5618384, 7022980, 14045960, 28091920]

約数ペア:

[(1, 28091920), (2, 14045960), (4, 7022980), (5, 5618384), (8, 3511490), (10, 2809192), (16, 1755745), (20, 1404596), (40, 702298), (80, 351149), (251, 111920), (502, 55960), (1004, 27980), (1255, 22384), (1399, 20080), (2008, 13990), (2510, 11192), (2798, 10040), (4016, 6995), (5020, 5596)]