21497749

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{2339}}^1$

素因数の和:2460

約数の個数: 16

約数和(自身を含む): 26732160

約数和(自身を除く): 5234411

約数列:

[1, 7, 13, 91, 101, 707, 1313, 2339, 9191, 16373, 30407, 212849, 236239, 1653673, 3071107, 21497749]

約数ペア:

[(1, 21497749), (7, 3071107), (13, 1653673), (91, 236239), (101, 212849), (707, 30407), (1313, 16373), (2339, 9191)]