20591649

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 34507200

約数和(自身を除く): 13915551

約数列:

[1, 3, 9, 13, 19, 39, 57, 59, 117, 157, 171, 177, 247, 471, 531, 741, 767, 1121, 1413, 2041, 2223, 2301, 2983, 3363, 6123, 6903, 8949, 9263, 10089, 14573, 18369, 26847, 27789, 38779, 43719, 83367, 116337, 120419, 131157, 175997, 349011, 361257, 527991, 1083771, 1583973, 2287961, 6863883, 20591649]

約数ペア:

[(1, 20591649), (3, 6863883), (9, 2287961), (13, 1583973), (19, 1083771), (39, 527991), (57, 361257), (59, 349011), (117, 175997), (157, 131157), (171, 120419), (177, 116337), (247, 83367), (471, 43719), (531, 38779), (741, 27789), (767, 26847), (1121, 18369), (1413, 14573), (2041, 10089), (2223, 9263), (2301, 8949), (2983, 6903), (3363, 6123)]