19513319

素因数分解:

$7^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:327

約数の個数: 24

約数和(自身を含む): 23912640

約数和(自身を除く): 4399321

約数列:

[1, 7, 37, 47, 49, 229, 259, 329, 1603, 1739, 1813, 2303, 8473, 10763, 11221, 12173, 59311, 75341, 85211, 398231, 415177, 527387, 2787617, 19513319]

約数ペア:

[(1, 19513319), (7, 2787617), (37, 527387), (47, 415177), (49, 398231), (229, 85211), (259, 75341), (329, 59311), (1603, 12173), (1739, 11221), (1813, 10763), (2303, 8473)]