81940495

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^2\times {\mathrm{1979}}^1$

素因数の和:2024

約数の個数: 36

約数和(自身を含む): 123920280

約数和(自身を除く): 41979785

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 169, 245, 455, 637, 845, 1183, 1979, 3185, 5915, 8281, 9895, 13853, 25727, 41405, 69265, 96971, 128635, 180089, 334451, 484855, 900445, 1260623, 1672255, 2341157, 6303115, 11705785, 16388099, 81940495]

約数ペア:

[(1, 81940495), (5, 16388099), (7, 11705785), (13, 6303115), (35, 2341157), (49, 1672255), (65, 1260623), (91, 900445), (169, 484855), (245, 334451), (455, 180089), (637, 128635), (845, 96971), (1183, 69265), (1979, 41405), (3185, 25727), (5915, 13853), (8281, 9895)]