21664919

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{827}}^1$

素因数の和:934

約数の個数: 16

約数和(自身を含む): 24323328

約数和(自身を除く): 2658409

約数列:

[1, 17, 23, 67, 391, 827, 1139, 1541, 14059, 19021, 26197, 55409, 323357, 941953, 1274407, 21664919]

約数ペア:

[(1, 21664919), (17, 1274407), (23, 941953), (67, 323357), (391, 55409), (827, 26197), (1139, 19021), (1541, 14059)]