64765040

素因数分解:

$2^4\times 5^1\times {\mathrm{809563}}^1$

素因数の和:809576

約数の個数: 20

約数和(自身を含む): 150578904

約数和(自身を除く): 85813864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 809563, 1619126, 3238252, 4047815, 6476504, 8095630, 12953008, 16191260, 32382520, 64765040]

約数ペア:

[(1, 64765040), (2, 32382520), (4, 16191260), (5, 12953008), (8, 8095630), (10, 6476504), (16, 4047815), (20, 3238252), (40, 1619126), (80, 809563)]