20760825

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{857}}^1$

素因数の和:906

約数の個数: 48

約数和(自身を含む): 38301120

約数和(自身を除く): 17540295

約数列:

[1, 3, 5, 15, 17, 19, 25, 51, 57, 75, 85, 95, 255, 285, 323, 425, 475, 857, 969, 1275, 1425, 1615, 2571, 4285, 4845, 8075, 12855, 14569, 16283, 21425, 24225, 43707, 48849, 64275, 72845, 81415, 218535, 244245, 276811, 364225, 407075, 830433, 1092675, 1221225, 1384055, 4152165, 6920275, 20760825]

約数ペア:

[(1, 20760825), (3, 6920275), (5, 4152165), (15, 1384055), (17, 1221225), (19, 1092675), (25, 830433), (51, 407075), (57, 364225), (75, 276811), (85, 244245), (95, 218535), (255, 81415), (285, 72845), (323, 64275), (425, 48849), (475, 43707), (857, 24225), (969, 21425), (1275, 16283), (1425, 14569), (1615, 12855), (2571, 8075), (4285, 4845)]