20962821

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 32348160

約数和(自身を除く): 11385339

約数列:

[1, 3, 11, 23, 33, 69, 71, 213, 253, 389, 759, 781, 1167, 1633, 2343, 4279, 4899, 8947, 12837, 17963, 26841, 27619, 53889, 82857, 98417, 295251, 303809, 635237, 911427, 1905711, 6987607, 20962821]

約数ペア:

[(1, 20962821), (3, 6987607), (11, 1905711), (23, 911427), (33, 635237), (69, 303809), (71, 295251), (213, 98417), (253, 82857), (389, 53889), (759, 27619), (781, 26841), (1167, 17963), (1633, 12837), (2343, 8947), (4279, 4899)]