21779505

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1913}}^1$

素因数の和:1958

約数の個数: 48

約数和(自身を含む): 42996096

約数和(自身を除く): 21216591

約数列:

[1, 3, 5, 9, 11, 15, 23, 33, 45, 55, 69, 99, 115, 165, 207, 253, 345, 495, 759, 1035, 1265, 1913, 2277, 3795, 5739, 9565, 11385, 17217, 21043, 28695, 43999, 63129, 86085, 105215, 131997, 189387, 219995, 315645, 395991, 483989, 659985, 946935, 1451967, 1979955, 2419945, 4355901, 7259835, 21779505]

約数ペア:

[(1, 21779505), (3, 7259835), (5, 4355901), (9, 2419945), (11, 1979955), (15, 1451967), (23, 946935), (33, 659985), (45, 483989), (55, 395991), (69, 315645), (99, 219995), (115, 189387), (165, 131997), (207, 105215), (253, 86085), (345, 63129), (495, 43999), (759, 28695), (1035, 21043), (1265, 17217), (1913, 11385), (2277, 9565), (3795, 5739)]