64780520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{231359}}^1$

素因数の和:231377

約数の個数: 32

約数和(自身を含む): 166579200

約数和(自身を除く): 101798680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 231359, 462718, 925436, 1156795, 1619513, 1850872, 2313590, 3239026, 4627180, 6478052, 8097565, 9254360, 12956104, 16195130, 32390260, 64780520]

約数ペア:

[(1, 64780520), (2, 32390260), (4, 16195130), (5, 12956104), (7, 9254360), (8, 8097565), (10, 6478052), (14, 4627180), (20, 3239026), (28, 2313590), (35, 1850872), (40, 1619513), (56, 1156795), (70, 925436), (140, 462718), (280, 231359)]