28918180

素因数分解:

$2^2\times 5^1\times {\mathrm{719}}^1\times {\mathrm{2011}}^1$

素因数の和:2739

約数の個数: 24

約数和(自身を含む): 60842880

約数和(自身を除く): 31924700

約数列:

[1, 2, 4, 5, 10, 20, 719, 1438, 2011, 2876, 3595, 4022, 7190, 8044, 10055, 14380, 20110, 40220, 1445909, 2891818, 5783636, 7229545, 14459090, 28918180]

約数ペア:

[(1, 28918180), (2, 14459090), (4, 7229545), (5, 5783636), (10, 2891818), (20, 1445909), (719, 40220), (1438, 20110), (2011, 14380), (2876, 10055), (3595, 8044), (4022, 7190)]