20201615

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 29331456

約数和(自身を除く): 9129841

約数列:

[1, 5, 7, 31, 35, 43, 155, 215, 217, 301, 433, 1085, 1333, 1505, 2165, 3031, 6665, 9331, 13423, 15155, 18619, 46655, 67115, 93095, 93961, 130333, 469805, 577189, 651665, 2885945, 4040323, 20201615]

約数ペア:

[(1, 20201615), (5, 4040323), (7, 2885945), (31, 651665), (35, 577189), (43, 469805), (155, 130333), (215, 93961), (217, 93095), (301, 67115), (433, 46655), (1085, 18619), (1333, 15155), (1505, 13423), (2165, 9331), (3031, 6665)]