19977555

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1933}}^1$

素因数の和:2007

約数の個数: 32

約数和(自身を含む): 35090496

約数和(自身を除く): 15112941

約数列:

[1, 3, 5, 13, 15, 39, 53, 65, 159, 195, 265, 689, 795, 1933, 2067, 3445, 5799, 9665, 10335, 25129, 28995, 75387, 102449, 125645, 307347, 376935, 512245, 1331837, 1536735, 3995511, 6659185, 19977555]

約数ペア:

[(1, 19977555), (3, 6659185), (5, 3995511), (13, 1536735), (15, 1331837), (39, 512245), (53, 376935), (65, 307347), (159, 125645), (195, 102449), (265, 75387), (689, 28995), (795, 25129), (1933, 10335), (2067, 9665), (3445, 5799)]