21623841

素因数分解:

$3^5\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 34909056

約数和(自身を除く): 13285215

約数列:

[1, 3, 9, 23, 27, 53, 69, 73, 81, 159, 207, 219, 243, 477, 621, 657, 1219, 1431, 1679, 1863, 1971, 3657, 3869, 4293, 5037, 5589, 5913, 10971, 11607, 12879, 15111, 17739, 32913, 34821, 45333, 88987, 98739, 104463, 135999, 266961, 296217, 313389, 407997, 800883, 940167, 2402649, 7207947, 21623841]

約数ペア:

[(1, 21623841), (3, 7207947), (9, 2402649), (23, 940167), (27, 800883), (53, 407997), (69, 313389), (73, 296217), (81, 266961), (159, 135999), (207, 104463), (219, 98739), (243, 88987), (477, 45333), (621, 34821), (657, 32913), (1219, 17739), (1431, 15111), (1679, 12879), (1863, 11607), (1971, 10971), (3657, 5913), (3869, 5589), (4293, 5037)]