290420440

素因数分解:

$2^3\times 5^1\times {\mathrm{7260511}}^1$

素因数の和:7260522

約数の個数: 16

約数和(自身を含む): 653446080

約数和(自身を除く): 363025640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7260511, 14521022, 29042044, 36302555, 58084088, 72605110, 145210220, 290420440]

約数ペア:

[(1, 290420440), (2, 145210220), (4, 72605110), (5, 58084088), (8, 36302555), (10, 29042044), (20, 14521022), (40, 7260511)]