28140760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17159}}^1$

素因数の和:17211

約数の個数: 32

約数和(自身を含む): 64864800

約数和(自身を除く): 36724040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17159, 34318, 68636, 85795, 137272, 171590, 343180, 686360, 703519, 1407038, 2814076, 3517595, 5628152, 7035190, 14070380, 28140760]

約数ペア:

[(1, 28140760), (2, 14070380), (4, 7035190), (5, 5628152), (8, 3517595), (10, 2814076), (20, 1407038), (40, 703519), (41, 686360), (82, 343180), (164, 171590), (205, 137272), (328, 85795), (410, 68636), (820, 34318), (1640, 17159)]