28004025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1301}}^1$

素因数の和:1362

約数の個数: 48

約数和(自身を含む): 54246528

約数和(自身を除く): 26242503

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 41, 75, 105, 123, 175, 205, 287, 525, 615, 861, 1025, 1301, 1435, 3075, 3903, 4305, 6505, 7175, 9107, 19515, 21525, 27321, 32525, 45535, 53341, 97575, 136605, 160023, 227675, 266705, 373387, 683025, 800115, 1120161, 1333525, 1866935, 4000575, 5600805, 9334675, 28004025]

約数ペア:

[(1, 28004025), (3, 9334675), (5, 5600805), (7, 4000575), (15, 1866935), (21, 1333525), (25, 1120161), (35, 800115), (41, 683025), (75, 373387), (105, 266705), (123, 227675), (175, 160023), (205, 136605), (287, 97575), (525, 53341), (615, 45535), (861, 32525), (1025, 27321), (1301, 21525), (1435, 19515), (3075, 9107), (3903, 7175), (4305, 6505)]