21749783

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{1087}}^1$

素因数の和:1222

約数の個数: 16

約数和(自身を含む): 25380864

約数和(自身を除く): 3631081

約数列:

[1, 11, 17, 107, 187, 1087, 1177, 1819, 11957, 18479, 20009, 116309, 203269, 1279399, 1977253, 21749783]

約数ペア:

[(1, 21749783), (11, 1977253), (17, 1279399), (107, 203269), (187, 116309), (1087, 20009), (1177, 18479), (1819, 11957)]