64980040

素因数分解:

$2^3\times 5^1\times {\mathrm{1624501}}^1$

素因数の和:1624512

約数の個数: 16

約数和(自身を含む): 146205180

約数和(自身を除く): 81225140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1624501, 3249002, 6498004, 8122505, 12996008, 16245010, 32490020, 64980040]

約数ペア:

[(1, 64980040), (2, 32490020), (4, 16245010), (5, 12996008), (8, 8122505), (10, 6498004), (20, 3249002), (40, 1624501)]