205394020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{789977}}^1$

素因数の和:789999

約数の個数: 24

約数和(自身を含む): 464507064

約数和(自身を除く): 259113044

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 789977, 1579954, 3159908, 3949885, 7899770, 10269701, 15799540, 20539402, 41078804, 51348505, 102697010, 205394020]

約数ペア:

[(1, 205394020), (2, 102697010), (4, 51348505), (5, 41078804), (10, 20539402), (13, 15799540), (20, 10269701), (26, 7899770), (52, 3949885), (65, 3159908), (130, 1579954), (260, 789977)]