21839307

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{7591}}^1$

素因数の和:7738

約数の個数: 16

約数和(自身を含む): 33526272

約数和(自身を除く): 11686965

約数列:

[1, 3, 7, 21, 137, 411, 959, 2877, 7591, 22773, 53137, 159411, 1039967, 3119901, 7279769, 21839307]

約数ペア:

[(1, 21839307), (3, 7279769), (7, 3119901), (21, 1039967), (137, 159411), (411, 53137), (959, 22773), (2877, 7591)]