199420240

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1999}}^1$

素因数の和:2084

約数の個数: 80

約数和(自身を含む): 491040000

約数和(自身を除く): 291619760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 43, 58, 80, 86, 116, 145, 172, 215, 232, 290, 344, 430, 464, 580, 688, 860, 1160, 1247, 1720, 1999, 2320, 2494, 3440, 3998, 4988, 6235, 7996, 9976, 9995, 12470, 15992, 19952, 19990, 24940, 31984, 39980, 49880, 57971, 79960, 85957, 99760, 115942, 159920, 171914, 231884, 289855, 343828, 429785, 463768, 579710, 687656, 859570, 927536, 1159420, 1375312, 1719140, 2318840, 2492753, 3438280, 4637680, 4985506, 6876560, 9971012, 12463765, 19942024, 24927530, 39884048, 49855060, 99710120, 199420240]

約数ペア:

[(1, 199420240), (2, 99710120), (4, 49855060), (5, 39884048), (8, 24927530), (10, 19942024), (16, 12463765), (20, 9971012), (29, 6876560), (40, 4985506), (43, 4637680), (58, 3438280), (80, 2492753), (86, 2318840), (116, 1719140), (145, 1375312), (172, 1159420), (215, 927536), (232, 859570), (290, 687656), (344, 579710), (430, 463768), (464, 429785), (580, 343828), (688, 289855), (860, 231884), (1160, 171914), (1247, 159920), (1720, 115942), (1999, 99760), (2320, 85957), (2494, 79960), (3440, 57971), (3998, 49880), (4988, 39980), (6235, 31984), (7996, 24940), (9976, 19990), (9995, 19952), (12470, 15992)]