21089707

素因数分解:

${\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{263}}^1$

素因数の和:422

約数の個数: 16

約数和(自身を含む): 23094720

約数和(自身を除く): 2005013

約数列:

[1, 17, 53, 89, 263, 901, 1513, 4471, 4717, 13939, 23407, 80189, 236963, 397919, 1240571, 21089707]

約数ペア:

[(1, 21089707), (17, 1240571), (53, 397919), (89, 236963), (263, 80189), (901, 23407), (1513, 13939), (4471, 4717)]