161755821

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{1553}}^1$

素因数の和:1793

約数の個数: 24

約数和(自身を含む): 238545216

約数和(自身を除く): 76789395

約数列:

[1, 3, 9, 71, 163, 213, 489, 639, 1467, 1553, 4659, 11573, 13977, 34719, 104157, 110263, 253139, 330789, 759417, 992367, 2278251, 17972869, 53918607, 161755821]

約数ペア:

[(1, 161755821), (3, 53918607), (9, 17972869), (71, 2278251), (163, 992367), (213, 759417), (489, 330789), (639, 253139), (1467, 110263), (1553, 104157), (4659, 34719), (11573, 13977)]