21288460

素因数分解:

$2^2\times 5^1\times {\mathrm{599}}^1\times {\mathrm{1777}}^1$

素因数の和:2385

約数の個数: 24

約数和(自身を含む): 44805600

約数和(自身を除く): 23517140

約数列:

[1, 2, 4, 5, 10, 20, 599, 1198, 1777, 2396, 2995, 3554, 5990, 7108, 8885, 11980, 17770, 35540, 1064423, 2128846, 4257692, 5322115, 10644230, 21288460]

約数ペア:

[(1, 21288460), (2, 10644230), (4, 5322115), (5, 4257692), (10, 2128846), (20, 1064423), (599, 35540), (1198, 17770), (1777, 11980), (2396, 8885), (2995, 7108), (3554, 5990)]