21356676819

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{708559}}^1$

素因数の和:708779

約数の個数: 24

約数和(自身を含む): 32829001920

約数和(自身を除く): 11472325101

約数列:

[1, 3, 9, 17, 51, 153, 197, 591, 1773, 3349, 10047, 30141, 708559, 2125677, 6377031, 12045503, 36136509, 108409527, 139586123, 418758369, 1256275107, 2372964091, 7118892273, 21356676819]

約数ペア:

[(1, 21356676819), (3, 7118892273), (9, 2372964091), (17, 1256275107), (51, 418758369), (153, 139586123), (197, 108409527), (591, 36136509), (1773, 12045503), (3349, 6377031), (10047, 2125677), (30141, 708559)]