21857072

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31769}}^1$

素因数の和:31820

約数の個数: 20

約数和(自身を含む): 43334280

約数和(自身を除く): 21477208

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31769, 63538, 127076, 254152, 508304, 1366067, 2732134, 5464268, 10928536, 21857072]

約数ペア:

[(1, 21857072), (2, 10928536), (4, 5464268), (8, 2732134), (16, 1366067), (43, 508304), (86, 254152), (172, 127076), (344, 63538), (688, 31769)]