21865136

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{33331}}^1$

素因数の和:33380

約数の個数: 20

約数和(自身を含む): 43398264

約数和(自身を除く): 21533128

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 33331, 66662, 133324, 266648, 533296, 1366571, 2733142, 5466284, 10932568, 21865136]

約数ペア:

[(1, 21865136), (2, 10932568), (4, 5466284), (8, 2733142), (16, 1366571), (41, 533296), (82, 266648), (164, 133324), (328, 66662), (656, 33331)]