81160520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{289859}}^1$

素因数の和:289877

約数の個数: 32

約数和(自身を含む): 208699200

約数和(自身を除く): 127538680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 289859, 579718, 1159436, 1449295, 2029013, 2318872, 2898590, 4058026, 5797180, 8116052, 10145065, 11594360, 16232104, 20290130, 40580260, 81160520]

約数ペア:

[(1, 81160520), (2, 40580260), (4, 20290130), (5, 16232104), (7, 11594360), (8, 10145065), (10, 8116052), (14, 5797180), (20, 4058026), (28, 2898590), (35, 2318872), (40, 2029013), (56, 1449295), (70, 1159436), (140, 579718), (280, 289859)]