520121427

素因数分解:

$3^1\times 7^4\times {\mathrm{163}}^1\times {\mathrm{443}}^1$

素因数の和:637

約数の個数: 40

約数和(自身を含む): 815830464

約数和(自身を除く): 295709037

約数列:

[1, 3, 7, 21, 49, 147, 163, 343, 443, 489, 1029, 1141, 1329, 2401, 3101, 3423, 7203, 7987, 9303, 21707, 23961, 55909, 65121, 72209, 151949, 167727, 216627, 391363, 455847, 505463, 1063643, 1174089, 1516389, 3190929, 3538241, 10614723, 24767687, 74303061, 173373809, 520121427]

約数ペア:

[(1, 520121427), (3, 173373809), (7, 74303061), (21, 24767687), (49, 10614723), (147, 3538241), (163, 3190929), (343, 1516389), (443, 1174089), (489, 1063643), (1029, 505463), (1141, 455847), (1329, 391363), (2401, 216627), (3101, 167727), (3423, 151949), (7203, 72209), (7987, 65121), (9303, 55909), (21707, 23961)]