21887151

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{313}}^1$

素因数の和:503

約数の個数: 32

約数和(自身を含む): 34605312

約数和(自身を除く): 12718161

約数列:

[1, 3, 11, 13, 33, 39, 143, 163, 313, 429, 489, 939, 1793, 2119, 3443, 4069, 5379, 6357, 10329, 12207, 23309, 44759, 51019, 69927, 134277, 153057, 561209, 663247, 1683627, 1989741, 7295717, 21887151]

約数ペア:

[(1, 21887151), (3, 7295717), (11, 1989741), (13, 1683627), (33, 663247), (39, 561209), (143, 153057), (163, 134277), (313, 69927), (429, 51019), (489, 44759), (939, 23309), (1793, 12207), (2119, 10329), (3443, 6357), (4069, 5379)]