389936680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1392631}}^1$

素因数の和:1392649

約数の個数: 32

約数和(自身を含む): 1002695040

約数和(自身を除く): 612758360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1392631, 2785262, 5570524, 6963155, 9748417, 11141048, 13926310, 19496834, 27852620, 38993668, 48742085, 55705240, 77987336, 97484170, 194968340, 389936680]

約数ペア:

[(1, 389936680), (2, 194968340), (4, 97484170), (5, 77987336), (7, 55705240), (8, 48742085), (10, 38993668), (14, 27852620), (20, 19496834), (28, 13926310), (35, 11141048), (40, 9748417), (56, 6963155), (70, 5570524), (140, 2785262), (280, 1392631)]