81454685

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{151}}^1\times {\mathrm{193}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 108987648

約数和(自身を除く): 27532963

約数列:

[1, 5, 13, 43, 65, 151, 193, 215, 559, 755, 965, 1963, 2509, 2795, 6493, 8299, 9815, 12545, 29143, 32465, 41495, 84409, 107887, 145715, 378859, 422045, 539435, 1253149, 1894295, 6265745, 16290937, 81454685]

約数ペア:

[(1, 81454685), (5, 16290937), (13, 6265745), (43, 1894295), (65, 1253149), (151, 539435), (193, 422045), (215, 378859), (559, 145715), (755, 107887), (965, 84409), (1963, 41495), (2509, 32465), (2795, 29143), (6493, 12545), (8299, 9815)]