27979660

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{3323}}^1$

素因数の和:3753

約数の個数: 24

約数和(自身を含む): 58914576

約数和(自身を除く): 30934916

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 3323, 4210, 6646, 8420, 13292, 16615, 33230, 66460, 1398983, 2797966, 5595932, 6994915, 13989830, 27979660]

約数ペア:

[(1, 27979660), (2, 13989830), (4, 6994915), (5, 5595932), (10, 2797966), (20, 1398983), (421, 66460), (842, 33230), (1684, 16615), (2105, 13292), (3323, 8420), (4210, 6646)]