78439340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{560281}}^1$

素因数の和:560297

約数の個数: 24

約数和(自身を含む): 188254752

約数和(自身を除く): 109815412

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 560281, 1120562, 2241124, 2801405, 3921967, 5602810, 7843934, 11205620, 15687868, 19609835, 39219670, 78439340]

約数ペア:

[(1, 78439340), (2, 39219670), (4, 19609835), (5, 15687868), (7, 11205620), (10, 7843934), (14, 5602810), (20, 3921967), (28, 2801405), (35, 2241124), (70, 1120562), (140, 560281)]