20291518

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{10691}}^1$

素因数の和:10779

約数の個数: 16

約数和(自身を含む): 33230736

約数和(自身を除く): 12939218

約数列:

[1, 2, 13, 26, 73, 146, 949, 1898, 10691, 21382, 138983, 277966, 780443, 1560886, 10145759, 20291518]

約数ペア:

[(1, 20291518), (2, 10145759), (13, 1560886), (26, 780443), (73, 277966), (146, 138983), (949, 21382), (1898, 10691)]