64672040

素因数分解:

$2^3\times 5^1\times {\mathrm{1616801}}^1$

素因数の和:1616812

約数の個数: 16

約数和(自身を含む): 145512180

約数和(自身を除く): 80840140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1616801, 3233602, 6467204, 8084005, 12934408, 16168010, 32336020, 64672040]

約数ペア:

[(1, 64672040), (2, 32336020), (4, 16168010), (5, 12934408), (8, 8084005), (10, 6467204), (20, 3233602), (40, 1616801)]