20935557

素因数分解:

$3^3\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:310

約数の個数: 32

約数和(自身を含む): 32117760

約数和(自身を除く): 11182203

約数列:

[1, 3, 9, 27, 67, 71, 163, 201, 213, 489, 603, 639, 1467, 1809, 1917, 4401, 4757, 10921, 11573, 14271, 32763, 34719, 42813, 98289, 104157, 128439, 294867, 312471, 775391, 2326173, 6978519, 20935557]

約数ペア:

[(1, 20935557), (3, 6978519), (9, 2326173), (27, 775391), (67, 312471), (71, 294867), (163, 128439), (201, 104157), (213, 98289), (489, 42813), (603, 34719), (639, 32763), (1467, 14271), (1809, 11573), (1917, 10921), (4401, 4757)]