66872720

素因数分解:

$2^4\times 5^1\times {\mathrm{835909}}^1$

素因数の和:835922

約数の個数: 20

約数和(自身を含む): 155479260

約数和(自身を除く): 88606540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 835909, 1671818, 3343636, 4179545, 6687272, 8359090, 13374544, 16718180, 33436360, 66872720]

約数ペア:

[(1, 66872720), (2, 33436360), (4, 16718180), (5, 13374544), (8, 8359090), (10, 6687272), (16, 4179545), (20, 3343636), (40, 1671818), (80, 835909)]