21101731

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{2069}}^1$

素因数の和:2154

約数の個数: 16

約数和(自身を含む): 25436160

約数和(自身を除く): 4334429

約数列:

[1, 7, 31, 47, 217, 329, 1457, 2069, 10199, 14483, 64139, 97243, 448973, 680701, 3014533, 21101731]

約数ペア:

[(1, 21101731), (7, 3014533), (31, 680701), (47, 448973), (217, 97243), (329, 64139), (1457, 14483), (2069, 10199)]