21551697

素因数分解:

$3^3\times {\mathrm{59}}^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1$

素因数の和:314

約数の個数: 32

約数和(自身を含む): 33062400

約数和(自身を除く): 11510703

約数列:

[1, 3, 9, 27, 59, 83, 163, 177, 249, 489, 531, 747, 1467, 1593, 2241, 4401, 4897, 9617, 13529, 14691, 28851, 40587, 44073, 86553, 121761, 132219, 259659, 365283, 798211, 2394633, 7183899, 21551697]

約数ペア:

[(1, 21551697), (3, 7183899), (9, 2394633), (27, 798211), (59, 365283), (83, 259659), (163, 132219), (177, 121761), (249, 86553), (489, 44073), (531, 40587), (747, 28851), (1467, 14691), (1593, 13529), (2241, 9617), (4401, 4897)]