21327417

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{523}}^1$

素因数の和:749

約数の個数: 24

約数和(自身を含む): 32370624

約数和(自身を除く): 11043207

約数列:

[1, 3, 9, 23, 69, 197, 207, 523, 591, 1569, 1773, 4531, 4707, 12029, 13593, 36087, 40779, 103031, 108261, 309093, 927279, 2369713, 7109139, 21327417]

約数ペア:

[(1, 21327417), (3, 7109139), (9, 2369713), (23, 927279), (69, 309093), (197, 108261), (207, 103031), (523, 40779), (591, 36087), (1569, 13593), (1773, 12029), (4531, 4707)]