20213972065

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{170921}}^1$

素因数の和:171073

約数の個数: 32

約数和(自身を含む): 28878981120

約数和(自身を除く): 8665009055

約数列:

[1, 5, 7, 31, 35, 109, 155, 217, 545, 763, 1085, 3379, 3815, 16895, 23653, 118265, 170921, 854605, 1196447, 5298551, 5982235, 18630389, 26492755, 37089857, 93151945, 130412723, 185449285, 577542059, 652063615, 2887710295, 4042794413, 20213972065]

約数ペア:

[(1, 20213972065), (5, 4042794413), (7, 2887710295), (31, 652063615), (35, 577542059), (109, 185449285), (155, 130412723), (217, 93151945), (545, 37089857), (763, 26492755), (1085, 18630389), (3379, 5982235), (3815, 5298551), (16895, 1196447), (23653, 854605), (118265, 170921)]