21113697

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{20639}}^1$

素因数の和:20684

約数の個数: 16

約数和(自身を含む): 31703040

約数和(自身を除く): 10589343

約数列:

[1, 3, 11, 31, 33, 93, 341, 1023, 20639, 61917, 227029, 639809, 681087, 1919427, 7037899, 21113697]

約数ペア:

[(1, 21113697), (3, 7037899), (11, 1919427), (31, 681087), (33, 639809), (93, 227029), (341, 61917), (1023, 20639)]