51264020

素因数分解:

$2^2\times 5^1\times {\mathrm{1601}}^2$

素因数の和:3211

約数の個数: 18

約数和(自身を含む): 107721726

約数和(自身を除く): 56457706

約数列:

[1, 2, 4, 5, 10, 20, 1601, 3202, 6404, 8005, 16010, 32020, 2563201, 5126402, 10252804, 12816005, 25632010, 51264020]

約数ペア:

[(1, 51264020), (2, 25632010), (4, 12816005), (5, 10252804), (10, 5126402), (20, 2563201), (1601, 32020), (3202, 16010), (6404, 8005)]