20201000

素因数分解:

$2^3\times 5^3\times {\mathrm{20201}}^1$

素因数の和:20222

約数の個数: 32

約数和(自身を含む): 47272680

約数和(自身を除く): 27071680

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000, 20201, 40402, 80804, 101005, 161608, 202010, 404020, 505025, 808040, 1010050, 2020100, 2525125, 4040200, 5050250, 10100500, 20201000]

約数ペア:

[(1, 20201000), (2, 10100500), (4, 5050250), (5, 4040200), (8, 2525125), (10, 2020100), (20, 1010050), (25, 808040), (40, 505025), (50, 404020), (100, 202010), (125, 161608), (200, 101005), (250, 80804), (500, 40402), (1000, 20201)]