8457260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{313}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 20467776

約数和(自身を除く): 12010516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 193, 313, 386, 626, 772, 965, 1252, 1351, 1565, 1930, 2191, 2702, 3130, 3860, 4382, 5404, 6260, 6755, 8764, 10955, 13510, 21910, 27020, 43820, 60409, 120818, 241636, 302045, 422863, 604090, 845726, 1208180, 1691452, 2114315, 4228630, 8457260]

約数ペア:

[(1, 8457260), (2, 4228630), (4, 2114315), (5, 1691452), (7, 1208180), (10, 845726), (14, 604090), (20, 422863), (28, 302045), (35, 241636), (70, 120818), (140, 60409), (193, 43820), (313, 27020), (386, 21910), (626, 13510), (772, 10955), (965, 8764), (1252, 6755), (1351, 6260), (1565, 5404), (1930, 4382), (2191, 3860), (2702, 3130)]