21755000

素因数分解:

$2^3\times 5^4\times {\mathrm{19}}^1\times {\mathrm{229}}^1$

素因数の和:274

約数の個数: 80

約数和(自身を含む): 53889000

約数和(自身を除く): 32134000

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 125, 152, 190, 200, 229, 250, 380, 458, 475, 500, 625, 760, 916, 950, 1000, 1145, 1250, 1832, 1900, 2290, 2375, 2500, 3800, 4351, 4580, 4750, 5000, 5725, 8702, 9160, 9500, 11450, 11875, 17404, 19000, 21755, 22900, 23750, 28625, 34808, 43510, 45800, 47500, 57250, 87020, 95000, 108775, 114500, 143125, 174040, 217550, 229000, 286250, 435100, 543875, 572500, 870200, 1087750, 1145000, 2175500, 2719375, 4351000, 5438750, 10877500, 21755000]

約数ペア:

[(1, 21755000), (2, 10877500), (4, 5438750), (5, 4351000), (8, 2719375), (10, 2175500), (19, 1145000), (20, 1087750), (25, 870200), (38, 572500), (40, 543875), (50, 435100), (76, 286250), (95, 229000), (100, 217550), (125, 174040), (152, 143125), (190, 114500), (200, 108775), (229, 95000), (250, 87020), (380, 57250), (458, 47500), (475, 45800), (500, 43510), (625, 34808), (760, 28625), (916, 23750), (950, 22900), (1000, 21755), (1145, 19000), (1250, 17404), (1832, 11875), (1900, 11450), (2290, 9500), (2375, 9160), (2500, 8702), (3800, 5725), (4351, 5000), (4580, 4750)]