21894975

素因数分解:

$3^3\times 5^2\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:381

約数の個数: 48

約数和(自身を含む): 40672000

約数和(自身を除く): 18777025

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 163, 199, 225, 489, 597, 675, 815, 995, 1467, 1791, 2445, 2985, 4075, 4401, 4975, 5373, 7335, 8955, 12225, 14925, 22005, 26865, 32437, 36675, 44775, 97311, 110025, 134325, 162185, 291933, 486555, 810925, 875799, 1459665, 2432775, 4378995, 7298325, 21894975]

約数ペア:

[(1, 21894975), (3, 7298325), (5, 4378995), (9, 2432775), (15, 1459665), (25, 875799), (27, 810925), (45, 486555), (75, 291933), (135, 162185), (163, 134325), (199, 110025), (225, 97311), (489, 44775), (597, 36675), (675, 32437), (815, 26865), (995, 22005), (1467, 14925), (1791, 12225), (2445, 8955), (2985, 7335), (4075, 5373), (4401, 4975)]