20381988

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{154409}}^1$

素因数の和:154427

約数の個数: 24

約数和(自身を含む): 51881760

約数和(自身を除く): 31499772

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132, 154409, 308818, 463227, 617636, 926454, 1698499, 1852908, 3396998, 5095497, 6793996, 10190994, 20381988]

約数ペア:

[(1, 20381988), (2, 10190994), (3, 6793996), (4, 5095497), (6, 3396998), (11, 1852908), (12, 1698499), (22, 926454), (33, 617636), (44, 463227), (66, 308818), (132, 154409)]