20900243

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{953}}^1$

素因数の和:1214

約数の個数: 16

約数和(自身を含む): 25857216

約数和(自身を除く): 4956973

約数列:

[1, 7, 13, 91, 241, 953, 1687, 3133, 6671, 12389, 21931, 86723, 229673, 1607711, 2985749, 20900243]

約数ペア:

[(1, 20900243), (7, 2985749), (13, 1607711), (91, 229673), (241, 86723), (953, 21931), (1687, 12389), (3133, 6671)]