20840500

素因数分解:

$2^2\times 5^3\times {\mathrm{41681}}^1$

素因数の和:41700

約数の個数: 24

約数和(自身を含む): 45516744

約数和(自身を除く): 24676244

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 41681, 83362, 166724, 208405, 416810, 833620, 1042025, 2084050, 4168100, 5210125, 10420250, 20840500]

約数ペア:

[(1, 20840500), (2, 10420250), (4, 5210125), (5, 4168100), (10, 2084050), (20, 1042025), (25, 833620), (50, 416810), (100, 208405), (125, 166724), (250, 83362), (500, 41681)]