21175861

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{1409}}^1$

素因数の和:1548

約数の個数: 16

約数和(自身を含む): 25718400

約数和(自身を除く): 4542539

約数列:

[1, 7, 19, 113, 133, 791, 1409, 2147, 9863, 15029, 26771, 159217, 187397, 1114519, 3025123, 21175861]

約数ペア:

[(1, 21175861), (7, 3025123), (19, 1114519), (113, 187397), (133, 159217), (791, 26771), (1409, 15029), (2147, 9863)]