21286900

素因数分解:

$2^2\times 5^2\times {\mathrm{212869}}^1$

素因数の和:212883

約数の個数: 18

約数和(自身を含む): 46192790

約数和(自身を除く): 24905890

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 212869, 425738, 851476, 1064345, 2128690, 4257380, 5321725, 10643450, 21286900]

約数ペア:

[(1, 21286900), (2, 10643450), (4, 5321725), (5, 4257380), (10, 2128690), (20, 1064345), (25, 851476), (50, 425738), (100, 212869)]