21955540

素因数分解:

$2^2\times 5^1\times {\mathrm{523}}^1\times {\mathrm{2099}}^1$

素因数の和:2631

約数の個数: 24

約数和(自身を含む): 46216800

約数和(自身を除く): 24261260

約数列:

[1, 2, 4, 5, 10, 20, 523, 1046, 2092, 2099, 2615, 4198, 5230, 8396, 10460, 10495, 20990, 41980, 1097777, 2195554, 4391108, 5488885, 10977770, 21955540]

約数ペア:

[(1, 21955540), (2, 10977770), (4, 5488885), (5, 4391108), (10, 2195554), (20, 1097777), (523, 41980), (1046, 20990), (2092, 10495), (2099, 10460), (2615, 8396), (4198, 5230)]