667026320

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{1999}}^1$

素因数の和:2152

約数の個数: 80

約数和(自身を含む): 1604064000

約数和(自身を除く): 937037680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 97, 172, 194, 215, 344, 388, 430, 485, 688, 776, 860, 970, 1552, 1720, 1940, 1999, 3440, 3880, 3998, 4171, 7760, 7996, 8342, 9995, 15992, 16684, 19990, 20855, 31984, 33368, 39980, 41710, 66736, 79960, 83420, 85957, 159920, 166840, 171914, 193903, 333680, 343828, 387806, 429785, 687656, 775612, 859570, 969515, 1375312, 1551224, 1719140, 1939030, 3102448, 3438280, 3878060, 6876560, 7756120, 8337829, 15512240, 16675658, 33351316, 41689145, 66702632, 83378290, 133405264, 166756580, 333513160, 667026320]

約数ペア:

[(1, 667026320), (2, 333513160), (4, 166756580), (5, 133405264), (8, 83378290), (10, 66702632), (16, 41689145), (20, 33351316), (40, 16675658), (43, 15512240), (80, 8337829), (86, 7756120), (97, 6876560), (172, 3878060), (194, 3438280), (215, 3102448), (344, 1939030), (388, 1719140), (430, 1551224), (485, 1375312), (688, 969515), (776, 859570), (860, 775612), (970, 687656), (1552, 429785), (1720, 387806), (1940, 343828), (1999, 333680), (3440, 193903), (3880, 171914), (3998, 166840), (4171, 159920), (7760, 85957), (7996, 83420), (8342, 79960), (9995, 66736), (15992, 41710), (16684, 39980), (19990, 33368), (20855, 31984)]