72919840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:231

約数の個数: 144

約数和(自身を含む): 204773184

約数和(自身を除く): 131853344

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 71, 80, 98, 112, 131, 140, 142, 160, 196, 224, 245, 262, 280, 284, 355, 392, 490, 497, 524, 560, 568, 655, 710, 784, 917, 980, 994, 1048, 1120, 1136, 1310, 1420, 1568, 1834, 1960, 1988, 2096, 2272, 2485, 2620, 2840, 3479, 3668, 3920, 3976, 4192, 4585, 4970, 5240, 5680, 6419, 6958, 7336, 7840, 7952, 9170, 9301, 9940, 10480, 11360, 12838, 13916, 14672, 15904, 17395, 18340, 18602, 19880, 20960, 25676, 27832, 29344, 32095, 34790, 36680, 37204, 39760, 46505, 51352, 55664, 64190, 65107, 69580, 73360, 74408, 79520, 93010, 102704, 111328, 128380, 130214, 139160, 146720, 148816, 186020, 205408, 256760, 260428, 278320, 297632, 325535, 372040, 455749, 513520, 520856, 556640, 651070, 744080, 911498, 1027040, 1041712, 1302140, 1488160, 1822996, 2083424, 2278745, 2604280, 3645992, 4557490, 5208560, 7291984, 9114980, 10417120, 14583968, 18229960, 36459920, 72919840]

約数ペア:

[(1, 72919840), (2, 36459920), (4, 18229960), (5, 14583968), (7, 10417120), (8, 9114980), (10, 7291984), (14, 5208560), (16, 4557490), (20, 3645992), (28, 2604280), (32, 2278745), (35, 2083424), (40, 1822996), (49, 1488160), (56, 1302140), (70, 1041712), (71, 1027040), (80, 911498), (98, 744080), (112, 651070), (131, 556640), (140, 520856), (142, 513520), (160, 455749), (196, 372040), (224, 325535), (245, 297632), (262, 278320), (280, 260428), (284, 256760), (355, 205408), (392, 186020), (490, 148816), (497, 146720), (524, 139160), (560, 130214), (568, 128380), (655, 111328), (710, 102704), (784, 93010), (917, 79520), (980, 74408), (994, 73360), (1048, 69580), (1120, 65107), (1136, 64190), (1310, 55664), (1420, 51352), (1568, 46505), (1834, 39760), (1960, 37204), (1988, 36680), (2096, 34790), (2272, 32095), (2485, 29344), (2620, 27832), (2840, 25676), (3479, 20960), (3668, 19880), (3920, 18602), (3976, 18340), (4192, 17395), (4585, 15904), (4970, 14672), (5240, 13916), (5680, 12838), (6419, 11360), (6958, 10480), (7336, 9940), (7840, 9301), (7952, 9170)]