20988892897

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{70117}}^1$

素因数の和:70321

約数の個数: 24

約数和(自身を含む): 25179373800

約数和(自身を除く): 4190480903

約数列:

[1, 7, 41, 49, 149, 287, 1043, 2009, 6109, 7301, 42763, 70117, 299341, 490819, 2874797, 3435733, 10447433, 20123579, 73132031, 140865053, 428344753, 511924217, 2998413271, 20988892897]

約数ペア:

[(1, 20988892897), (7, 2998413271), (41, 511924217), (49, 428344753), (149, 140865053), (287, 73132031), (1043, 20123579), (2009, 10447433), (6109, 3435733), (7301, 2874797), (42763, 490819), (70117, 299341)]