21989122

素因数分解:

$2^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1\times {\mathrm{653}}^1$

素因数の和:917

約数の個数: 16

約数和(自身を含む): 33550200

約数和(自身を除く): 11561078

約数列:

[1, 2, 113, 149, 226, 298, 653, 1306, 16837, 33674, 73789, 97297, 147578, 194594, 10994561, 21989122]

約数ペア:

[(1, 21989122), (2, 10994561), (113, 194594), (149, 147578), (226, 97297), (298, 73789), (653, 33674), (1306, 16837)]