21263697

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3709}}^1$

素因数の和:3742

約数の個数: 36

約数和(自身を含む): 38487540

約数和(自身を除く): 17223843

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 441, 637, 819, 1911, 3709, 5733, 11127, 25963, 33381, 48217, 77889, 144651, 181741, 233667, 337519, 433953, 545223, 1012557, 1635669, 2362633, 3037671, 7087899, 21263697]

約数ペア:

[(1, 21263697), (3, 7087899), (7, 3037671), (9, 2362633), (13, 1635669), (21, 1012557), (39, 545223), (49, 433953), (63, 337519), (91, 233667), (117, 181741), (147, 144651), (273, 77889), (441, 48217), (637, 33381), (819, 25963), (1911, 11127), (3709, 5733)]