81798800

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:313

約数の個数: 120

約数和(自身を含む): 212188800

約数和(自身を除く): 130390000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 47, 50, 76, 80, 94, 95, 100, 152, 188, 190, 200, 229, 235, 304, 376, 380, 400, 458, 470, 475, 752, 760, 893, 916, 940, 950, 1145, 1175, 1520, 1786, 1832, 1880, 1900, 2290, 2350, 3572, 3664, 3760, 3800, 4351, 4465, 4580, 4700, 5725, 7144, 7600, 8702, 8930, 9160, 9400, 10763, 11450, 14288, 17404, 17860, 18320, 18800, 21526, 21755, 22325, 22900, 34808, 35720, 43052, 43510, 44650, 45800, 53815, 69616, 71440, 86104, 87020, 89300, 91600, 107630, 108775, 172208, 174040, 178600, 204497, 215260, 217550, 269075, 348080, 357200, 408994, 430520, 435100, 538150, 817988, 861040, 870200, 1022485, 1076300, 1635976, 1740400, 2044970, 2152600, 3271952, 4089940, 4305200, 5112425, 8179880, 10224850, 16359760, 20449700, 40899400, 81798800]

約数ペア:

[(1, 81798800), (2, 40899400), (4, 20449700), (5, 16359760), (8, 10224850), (10, 8179880), (16, 5112425), (19, 4305200), (20, 4089940), (25, 3271952), (38, 2152600), (40, 2044970), (47, 1740400), (50, 1635976), (76, 1076300), (80, 1022485), (94, 870200), (95, 861040), (100, 817988), (152, 538150), (188, 435100), (190, 430520), (200, 408994), (229, 357200), (235, 348080), (304, 269075), (376, 217550), (380, 215260), (400, 204497), (458, 178600), (470, 174040), (475, 172208), (752, 108775), (760, 107630), (893, 91600), (916, 89300), (940, 87020), (950, 86104), (1145, 71440), (1175, 69616), (1520, 53815), (1786, 45800), (1832, 44650), (1880, 43510), (1900, 43052), (2290, 35720), (2350, 34808), (3572, 22900), (3664, 22325), (3760, 21755), (3800, 21526), (4351, 18800), (4465, 18320), (4580, 17860), (4700, 17404), (5725, 14288), (7144, 11450), (7600, 10763), (8702, 9400), (8930, 9160)]