21527205

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3361}}^1$

素因数の和:3437

約数の個数: 32

約数和(自身を含む): 40021248

約数和(自身を除く): 18494043

約数列:

[1, 3, 5, 7, 15, 21, 35, 61, 105, 183, 305, 427, 915, 1281, 2135, 3361, 6405, 10083, 16805, 23527, 50415, 70581, 117635, 205021, 352905, 615063, 1025105, 1435147, 3075315, 4305441, 7175735, 21527205]

約数ペア:

[(1, 21527205), (3, 7175735), (5, 4305441), (7, 3075315), (15, 1435147), (21, 1025105), (35, 615063), (61, 352905), (105, 205021), (183, 117635), (305, 70581), (427, 50415), (915, 23527), (1281, 16805), (2135, 10083), (3361, 6405)]