4001000

素因数分解:

$2^3\times 5^3\times {\mathrm{4001}}^1$

素因数の和:4022

約数の個数: 32

約数和(自身を含む): 9364680

約数和(自身を除く): 5363680

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 4001, 8002, 16004, 20005, 32008, 40010, 80020, 100025, 160040, 200050, 400100, 500125, 800200, 1000250, 2000500, 4001000]

約数ペア:

[(1, 4001000), (2, 2000500), (4, 1000250), (5, 800200), (8, 500125), (10, 400100), (20, 200050), (25, 160040), (40, 100025), (50, 80020), (100, 40010), (125, 32008), (200, 20005), (250, 16004), (500, 8002), (1000, 4001)]