20940525

素因数分解:

$3^7\times 5^2\times {\mathrm{383}}^1$

素因数の和:414

約数の個数: 48

約数和(自身を含む): 39045120

約数和(自身を除く): 18104595

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 243, 383, 405, 675, 729, 1149, 1215, 1915, 2025, 2187, 3447, 3645, 5745, 6075, 9575, 10341, 10935, 17235, 18225, 28725, 31023, 51705, 54675, 86175, 93069, 155115, 258525, 279207, 465345, 775575, 837621, 1396035, 2326725, 4188105, 6980175, 20940525]

約数ペア:

[(1, 20940525), (3, 6980175), (5, 4188105), (9, 2326725), (15, 1396035), (25, 837621), (27, 775575), (45, 465345), (75, 279207), (81, 258525), (135, 155115), (225, 93069), (243, 86175), (383, 54675), (405, 51705), (675, 31023), (729, 28725), (1149, 18225), (1215, 17235), (1915, 10935), (2025, 10341), (2187, 9575), (3447, 6075), (3645, 5745)]