19639665

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{683}}^1$

素因数の和:771

約数の個数: 40

約数和(自身を含む): 35754048

約数和(自身を除く): 16114383

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 213, 355, 405, 639, 683, 1065, 1917, 2049, 3195, 3415, 5751, 6147, 9585, 10245, 18441, 28755, 30735, 48493, 55323, 92205, 145479, 242465, 276615, 436437, 727395, 1309311, 2182185, 3927933, 6546555, 19639665]

約数ペア:

[(1, 19639665), (3, 6546555), (5, 3927933), (9, 2182185), (15, 1309311), (27, 727395), (45, 436437), (71, 276615), (81, 242465), (135, 145479), (213, 92205), (355, 55323), (405, 48493), (639, 30735), (683, 28755), (1065, 18441), (1917, 10245), (2049, 9585), (3195, 6147), (3415, 5751)]