21128667

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{17053}}^1$

素因数の和:17122

約数の個数: 16

約数和(自身を含む): 32743680

約数和(自身を除く): 11615013

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 17053, 51159, 119371, 358113, 1006127, 3018381, 7042889, 21128667]

約数ペア:

[(1, 21128667), (3, 7042889), (7, 3018381), (21, 1006127), (59, 358113), (177, 119371), (413, 51159), (1239, 17053)]