640453242

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:281

約数の個数: 128

約数和(自身を含む): 1574092800

約数和(自身を除く): 933639558

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 31, 33, 39, 62, 66, 78, 93, 121, 143, 186, 199, 242, 286, 341, 363, 398, 403, 429, 597, 682, 726, 806, 858, 1023, 1194, 1209, 1331, 1573, 2046, 2189, 2418, 2587, 2662, 3146, 3751, 3993, 4378, 4433, 4719, 5174, 6169, 6567, 7502, 7761, 7986, 8866, 9438, 11253, 12338, 13134, 13299, 15522, 17303, 18507, 22506, 24079, 26598, 28457, 34606, 37014, 41261, 48158, 48763, 51909, 56914, 67859, 72237, 80197, 82522, 85371, 97526, 103818, 123783, 135718, 144474, 146289, 160394, 170742, 203577, 240591, 247566, 264869, 292578, 313027, 407154, 481182, 529738, 536393, 626054, 746449, 794607, 882167, 939081, 1072786, 1492898, 1589214, 1609179, 1764334, 1878162, 2239347, 2646501, 3218358, 3443297, 4478694, 5293002, 6886594, 8210939, 9703837, 10329891, 16421878, 19407674, 20659782, 24632817, 29111511, 49265634, 58223022, 106742207, 213484414, 320226621, 640453242]

約数ペア:

[(1, 640453242), (2, 320226621), (3, 213484414), (6, 106742207), (11, 58223022), (13, 49265634), (22, 29111511), (26, 24632817), (31, 20659782), (33, 19407674), (39, 16421878), (62, 10329891), (66, 9703837), (78, 8210939), (93, 6886594), (121, 5293002), (143, 4478694), (186, 3443297), (199, 3218358), (242, 2646501), (286, 2239347), (341, 1878162), (363, 1764334), (398, 1609179), (403, 1589214), (429, 1492898), (597, 1072786), (682, 939081), (726, 882167), (806, 794607), (858, 746449), (1023, 626054), (1194, 536393), (1209, 529738), (1331, 481182), (1573, 407154), (2046, 313027), (2189, 292578), (2418, 264869), (2587, 247566), (2662, 240591), (3146, 203577), (3751, 170742), (3993, 160394), (4378, 146289), (4433, 144474), (4719, 135718), (5174, 123783), (6169, 103818), (6567, 97526), (7502, 85371), (7761, 82522), (7986, 80197), (8866, 72237), (9438, 67859), (11253, 56914), (12338, 51909), (13134, 48763), (13299, 48158), (15522, 41261), (17303, 37014), (18507, 34606), (22506, 28457), (24079, 26598)]