201820857

素因数分解:

$3^1\times 7^4\times {\mathrm{28019}}^1$

素因数の和:28050

約数の個数: 20

約数和(自身を含む): 313936080

約数和(自身を除く): 112115223

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 28019, 84057, 196133, 588399, 1372931, 4118793, 9610517, 28831551, 67273619, 201820857]

約数ペア:

[(1, 201820857), (3, 67273619), (7, 28831551), (21, 9610517), (49, 4118793), (147, 1372931), (343, 588399), (1029, 196133), (2401, 84057), (7203, 28019)]