2500000040

素因数分解:

$2^3\times 5^1\times {\mathrm{62500001}}^1$

素因数の和:62500012

約数の個数: 16

約数和(自身を含む): 5625000180

約数和(自身を除く): 3125000140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 62500001, 125000002, 250000004, 312500005, 500000008, 625000010, 1250000020, 2500000040]

約数ペア:

[(1, 2500000040), (2, 1250000020), (4, 625000010), (5, 500000008), (8, 312500005), (10, 250000004), (20, 125000002), (40, 62500001)]