18091000

素因数分解:

$2^3\times 5^3\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:329

約数の個数: 64

約数和(自身を含む): 43056000

約数和(自身を除く): 24965000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 125, 158, 200, 229, 250, 316, 395, 458, 500, 632, 790, 916, 1000, 1145, 1580, 1832, 1975, 2290, 3160, 3950, 4580, 5725, 7900, 9160, 9875, 11450, 15800, 18091, 19750, 22900, 28625, 36182, 39500, 45800, 57250, 72364, 79000, 90455, 114500, 144728, 180910, 229000, 361820, 452275, 723640, 904550, 1809100, 2261375, 3618200, 4522750, 9045500, 18091000]

約数ペア:

[(1, 18091000), (2, 9045500), (4, 4522750), (5, 3618200), (8, 2261375), (10, 1809100), (20, 904550), (25, 723640), (40, 452275), (50, 361820), (79, 229000), (100, 180910), (125, 144728), (158, 114500), (200, 90455), (229, 79000), (250, 72364), (316, 57250), (395, 45800), (458, 39500), (500, 36182), (632, 28625), (790, 22900), (916, 19750), (1000, 18091), (1145, 15800), (1580, 11450), (1832, 9875), (1975, 9160), (2290, 7900), (3160, 5725), (3950, 4580)]