81297480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^3\times {\mathrm{509}}^1$

素因数の和:556

約数の個数: 128

約数和(自身を含む): 268790400

約数和(自身を除く): 187492920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 121, 132, 165, 220, 242, 264, 330, 363, 440, 484, 509, 605, 660, 726, 968, 1018, 1210, 1320, 1331, 1452, 1527, 1815, 2036, 2420, 2545, 2662, 2904, 3054, 3630, 3993, 4072, 4840, 5090, 5324, 5599, 6108, 6655, 7260, 7635, 7986, 10180, 10648, 11198, 12216, 13310, 14520, 15270, 15972, 16797, 19965, 20360, 22396, 26620, 27995, 30540, 31944, 33594, 39930, 44792, 53240, 55990, 61080, 61589, 67188, 79860, 83985, 111980, 123178, 134376, 159720, 167970, 184767, 223960, 246356, 307945, 335940, 369534, 492712, 615890, 671880, 677479, 739068, 923835, 1231780, 1354958, 1478136, 1847670, 2032437, 2463560, 2709916, 3387395, 3695340, 4064874, 5419832, 6774790, 7390680, 8129748, 10162185, 13549580, 16259496, 20324370, 27099160, 40648740, 81297480]

約数ペア:

[(1, 81297480), (2, 40648740), (3, 27099160), (4, 20324370), (5, 16259496), (6, 13549580), (8, 10162185), (10, 8129748), (11, 7390680), (12, 6774790), (15, 5419832), (20, 4064874), (22, 3695340), (24, 3387395), (30, 2709916), (33, 2463560), (40, 2032437), (44, 1847670), (55, 1478136), (60, 1354958), (66, 1231780), (88, 923835), (110, 739068), (120, 677479), (121, 671880), (132, 615890), (165, 492712), (220, 369534), (242, 335940), (264, 307945), (330, 246356), (363, 223960), (440, 184767), (484, 167970), (509, 159720), (605, 134376), (660, 123178), (726, 111980), (968, 83985), (1018, 79860), (1210, 67188), (1320, 61589), (1331, 61080), (1452, 55990), (1527, 53240), (1815, 44792), (2036, 39930), (2420, 33594), (2545, 31944), (2662, 30540), (2904, 27995), (3054, 26620), (3630, 22396), (3993, 20360), (4072, 19965), (4840, 16797), (5090, 15972), (5324, 15270), (5599, 14520), (6108, 13310), (6655, 12216), (7260, 11198), (7635, 10648), (7986, 10180)]