20200400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{4591}}^1$

素因数の和:4620

約数の個数: 60

約数和(自身を含む): 52954944

約数和(自身を除く): 32754544

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 4591, 9182, 18364, 22955, 36728, 45910, 50501, 73456, 91820, 101002, 114775, 183640, 202004, 229550, 252505, 367280, 404008, 459100, 505010, 808016, 918200, 1010020, 1262525, 1836400, 2020040, 2525050, 4040080, 5050100, 10100200, 20200400]

約数ペア:

[(1, 20200400), (2, 10100200), (4, 5050100), (5, 4040080), (8, 2525050), (10, 2020040), (11, 1836400), (16, 1262525), (20, 1010020), (22, 918200), (25, 808016), (40, 505010), (44, 459100), (50, 404008), (55, 367280), (80, 252505), (88, 229550), (100, 202004), (110, 183640), (176, 114775), (200, 101002), (220, 91820), (275, 73456), (400, 50501), (440, 45910), (550, 36728), (880, 22955), (1100, 18364), (2200, 9182), (4400, 4591)]