81943008

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1999}}^1$

素因数の和:2080

約数の個数: 96

約数和(自身を含む): 249984000

約数和(自身を除く): 168040992

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 61, 84, 96, 112, 122, 168, 183, 224, 244, 336, 366, 427, 488, 672, 732, 854, 976, 1281, 1464, 1708, 1952, 1999, 2562, 2928, 3416, 3998, 5124, 5856, 5997, 6832, 7996, 10248, 11994, 13664, 13993, 15992, 20496, 23988, 27986, 31984, 40992, 41979, 47976, 55972, 63968, 83958, 95952, 111944, 121939, 167916, 191904, 223888, 243878, 335832, 365817, 447776, 487756, 671664, 731634, 853573, 975512, 1343328, 1463268, 1707146, 1951024, 2560719, 2926536, 3414292, 3902048, 5121438, 5853072, 6828584, 10242876, 11706144, 13657168, 20485752, 27314336, 40971504, 81943008]

約数ペア:

[(1, 81943008), (2, 40971504), (3, 27314336), (4, 20485752), (6, 13657168), (7, 11706144), (8, 10242876), (12, 6828584), (14, 5853072), (16, 5121438), (21, 3902048), (24, 3414292), (28, 2926536), (32, 2560719), (42, 1951024), (48, 1707146), (56, 1463268), (61, 1343328), (84, 975512), (96, 853573), (112, 731634), (122, 671664), (168, 487756), (183, 447776), (224, 365817), (244, 335832), (336, 243878), (366, 223888), (427, 191904), (488, 167916), (672, 121939), (732, 111944), (854, 95952), (976, 83958), (1281, 63968), (1464, 55972), (1708, 47976), (1952, 41979), (1999, 40992), (2562, 31984), (2928, 27986), (3416, 23988), (3998, 20496), (5124, 15992), (5856, 13993), (5997, 13664), (6832, 11994), (7996, 10248)]