20191381

素因数分解:

$7^3\times {\mathrm{37}}^2\times {\mathrm{43}}^1$

素因数の和:138

約数の個数: 24

約数和(自身を含む): 24763200

約数和(自身を除く): 4571819

約数列:

[1, 7, 37, 43, 49, 259, 301, 343, 1369, 1591, 1813, 2107, 9583, 11137, 12691, 14749, 58867, 67081, 77959, 412069, 469567, 545713, 2884483, 20191381]

約数ペア:

[(1, 20191381), (7, 2884483), (37, 545713), (43, 469567), (49, 412069), (259, 77959), (301, 67081), (343, 58867), (1369, 14749), (1591, 12691), (1813, 11137), (2107, 9583)]