28166481

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2099}}^1$

素因数の和:2186

約数の個数: 32

約数和(自身を含む): 48384000

約数和(自身を除く): 20217519

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 497, 639, 1491, 1917, 2099, 4473, 6297, 13419, 14693, 18891, 44079, 56673, 132237, 149029, 396711, 447087, 1043203, 1341261, 3129609, 4023783, 9388827, 28166481]

約数ペア:

[(1, 28166481), (3, 9388827), (7, 4023783), (9, 3129609), (21, 1341261), (27, 1043203), (63, 447087), (71, 396711), (189, 149029), (213, 132237), (497, 56673), (639, 44079), (1491, 18891), (1917, 14693), (2099, 13419), (4473, 6297)]