81217485

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{8719}}^1$

素因数の和:8759

約数の個数: 40

約数和(自身を含む): 151937280

約数和(自身を除く): 70719795

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 3105, 8719, 9315, 26157, 43595, 78471, 130785, 200537, 235413, 392355, 601611, 706239, 1002685, 1177065, 1804833, 3008055, 3531195, 5414499, 9024165, 16243497, 27072495, 81217485]

約数ペア:

[(1, 81217485), (3, 27072495), (5, 16243497), (9, 9024165), (15, 5414499), (23, 3531195), (27, 3008055), (45, 1804833), (69, 1177065), (81, 1002685), (115, 706239), (135, 601611), (207, 392355), (345, 235413), (405, 200537), (621, 130785), (1035, 78471), (1863, 43595), (3105, 26157), (8719, 9315)]