199972087

素因数分解:

$7^4\times {\mathrm{37}}^1\times {\mathrm{2251}}^1$

素因数の和:2316

約数の個数: 20

約数和(自身を含む): 239698376

約数和(自身を除く): 39726289

約数列:

[1, 7, 37, 49, 259, 343, 1813, 2251, 2401, 12691, 15757, 83287, 88837, 110299, 583009, 772093, 4081063, 5404651, 28567441, 199972087]

約数ペア:

[(1, 199972087), (7, 28567441), (37, 5404651), (49, 4081063), (259, 772093), (343, 583009), (1813, 110299), (2251, 88837), (2401, 83287), (12691, 15757)]