19643553

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{7823}}^1$

素因数の和:7866

約数の個数: 20

約数和(自身を含む): 30294528

約数和(自身を除く): 10650975

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 7823, 23469, 70407, 211221, 242513, 633663, 727539, 2182617, 6547851, 19643553]

約数ペア:

[(1, 19643553), (3, 6547851), (9, 2182617), (27, 727539), (31, 633663), (81, 242513), (93, 211221), (279, 70407), (837, 23469), (2511, 7823)]