20820065

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{619}}^1$

素因数の和:693

約数の個数: 24

約数和(自身を含む): 29551680

約数和(自身を除く): 8731615

約数列:

[1, 5, 7, 31, 35, 155, 217, 619, 961, 1085, 3095, 4333, 4805, 6727, 19189, 21665, 33635, 95945, 134323, 594859, 671615, 2974295, 4164013, 20820065]

約数ペア:

[(1, 20820065), (5, 4164013), (7, 2974295), (31, 671615), (35, 594859), (155, 134323), (217, 95945), (619, 33635), (961, 21665), (1085, 19189), (3095, 6727), (4333, 4805)]