18402580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131447}}^1$

素因数の和:131463

約数の個数: 24

約数和(自身を含む): 44166528

約数和(自身を除く): 25763948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 131447, 262894, 525788, 657235, 920129, 1314470, 1840258, 2628940, 3680516, 4600645, 9201290, 18402580]

約数ペア:

[(1, 18402580), (2, 9201290), (4, 4600645), (5, 3680516), (7, 2628940), (10, 1840258), (14, 1314470), (20, 920129), (28, 657235), (35, 525788), (70, 262894), (140, 131447)]