21281640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{177347}}^1$

素因数の和:177361

約数の個数: 32

約数和(自身を含む): 63845280

約数和(自身を除く): 42563640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 177347, 354694, 532041, 709388, 886735, 1064082, 1418776, 1773470, 2128164, 2660205, 3546940, 4256328, 5320410, 7093880, 10640820, 21281640]

約数ペア:

[(1, 21281640), (2, 10640820), (3, 7093880), (4, 5320410), (5, 4256328), (6, 3546940), (8, 2660205), (10, 2128164), (12, 1773470), (15, 1418776), (20, 1064082), (24, 886735), (30, 709388), (40, 532041), (60, 354694), (120, 177347)]