21348439

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{1367}}^1$

素因数の和:1494

約数の個数: 16

約数和(自身を含む): 25740288

約数和(自身を除く): 4391849

約数列:

[1, 7, 23, 97, 161, 679, 1367, 2231, 9569, 15617, 31441, 132599, 220087, 928193, 3049777, 21348439]

約数ペア:

[(1, 21348439), (7, 3049777), (23, 928193), (97, 220087), (161, 132599), (679, 31441), (1367, 15617), (2231, 9569)]