20288385

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{439}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 38438400

約数和(自身を除く): 18150015

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 79, 117, 195, 237, 395, 439, 585, 711, 1027, 1185, 1317, 2195, 3081, 3555, 3951, 5135, 5707, 6585, 9243, 15405, 17121, 19755, 28535, 34681, 46215, 51363, 85605, 104043, 173405, 256815, 312129, 450853, 520215, 1352559, 1560645, 2254265, 4057677, 6762795, 20288385]

約数ペア:

[(1, 20288385), (3, 6762795), (5, 4057677), (9, 2254265), (13, 1560645), (15, 1352559), (39, 520215), (45, 450853), (65, 312129), (79, 256815), (117, 173405), (195, 104043), (237, 85605), (395, 51363), (439, 46215), (585, 34681), (711, 28535), (1027, 19755), (1185, 17121), (1317, 15405), (2195, 9243), (3081, 6585), (3555, 5707), (3951, 5135)]