20121647

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{233}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 25350624

約数和(自身を除く): 5228977

約数列:

[1, 7, 13, 73, 91, 169, 233, 511, 949, 1183, 1631, 3029, 6643, 12337, 17009, 21203, 39377, 86359, 119063, 221117, 275639, 1547819, 2874521, 20121647]

約数ペア:

[(1, 20121647), (7, 2874521), (13, 1547819), (73, 275639), (91, 221117), (169, 119063), (233, 86359), (511, 39377), (949, 21203), (1183, 17009), (1631, 12337), (3029, 6643)]