64740040

素因数分解:

$2^3\times 5^1\times {\mathrm{1618501}}^1$

素因数の和:1618512

約数の個数: 16

約数和(自身を含む): 145665180

約数和(自身を除く): 80925140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1618501, 3237002, 6474004, 8092505, 12948008, 16185010, 32370020, 64740040]

約数ペア:

[(1, 64740040), (2, 32370020), (4, 16185010), (5, 12948008), (8, 8092505), (10, 6474004), (20, 3237002), (40, 1618501)]