20961225

素因数分解:

$3^2\times 5^2\times {\mathrm{59}}^1\times {\mathrm{1579}}^1$

素因数の和:1654

約数の個数: 36

約数和(自身を含む): 38204400

約数和(自身を除く): 17243175

約数列:

[1, 3, 5, 9, 15, 25, 45, 59, 75, 177, 225, 295, 531, 885, 1475, 1579, 2655, 4425, 4737, 7895, 13275, 14211, 23685, 39475, 71055, 93161, 118425, 279483, 355275, 465805, 838449, 1397415, 2329025, 4192245, 6987075, 20961225]

約数ペア:

[(1, 20961225), (3, 6987075), (5, 4192245), (9, 2329025), (15, 1397415), (25, 838449), (45, 465805), (59, 355275), (75, 279483), (177, 118425), (225, 93161), (295, 71055), (531, 39475), (885, 23685), (1475, 14211), (1579, 13275), (2655, 7895), (4425, 4737)]