20676123

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 34594560

約数和(自身を除く): 13918437

約数列:

[1, 3, 9, 13, 19, 39, 57, 71, 117, 131, 171, 213, 247, 393, 639, 741, 923, 1179, 1349, 1703, 2223, 2489, 2769, 4047, 5109, 7467, 8307, 9301, 12141, 15327, 17537, 22401, 27903, 32357, 52611, 83709, 97071, 120913, 157833, 176719, 291213, 362739, 530157, 1088217, 1590471, 2297347, 6892041, 20676123]

約数ペア:

[(1, 20676123), (3, 6892041), (9, 2297347), (13, 1590471), (19, 1088217), (39, 530157), (57, 362739), (71, 291213), (117, 176719), (131, 157833), (171, 120913), (213, 97071), (247, 83709), (393, 52611), (639, 32357), (741, 27903), (923, 22401), (1179, 17537), (1349, 15327), (1703, 12141), (2223, 9301), (2489, 8307), (2769, 7467), (4047, 5109)]