18988929

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{353}}^1$

素因数の和:541

約数の個数: 24

約数和(自身を含む): 28348320

約数和(自身を除く): 9359391

約数列:

[1, 3, 9, 43, 129, 139, 353, 387, 417, 1059, 1251, 3177, 5977, 15179, 17931, 45537, 49067, 53793, 136611, 147201, 441603, 2109881, 6329643, 18988929]

約数ペア:

[(1, 18988929), (3, 6329643), (9, 2109881), (43, 441603), (129, 147201), (139, 136611), (353, 53793), (387, 49067), (417, 45537), (1059, 17931), (1251, 15179), (3177, 5977)]