90210040

素因数分解:

$2^3\times 5^1\times {\mathrm{2255251}}^1$

素因数の和:2255262

約数の個数: 16

約数和(自身を含む): 202972680

約数和(自身を除く): 112762640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2255251, 4510502, 9021004, 11276255, 18042008, 22552510, 45105020, 90210040]

約数ペア:

[(1, 90210040), (2, 45105020), (4, 22552510), (5, 18042008), (8, 11276255), (10, 9021004), (20, 4510502), (40, 2255251)]