17920539

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21881}}^1$

素因数の和:21907

約数の個数: 24

約数和(自身を含む): 31860192

約数和(自身を除く): 13939653

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 21881, 65643, 153167, 196929, 284453, 459501, 853359, 1378503, 1991171, 2560077, 5973513, 17920539]

約数ペア:

[(1, 17920539), (3, 5973513), (7, 2560077), (9, 1991171), (13, 1378503), (21, 853359), (39, 459501), (63, 284453), (91, 196929), (117, 153167), (273, 65643), (819, 21881)]