18917861984

素因数分解:

$2^5\times 7^2\times {\mathrm{83}}^1\times {\mathrm{145361}}^1$

素因数の和:145468

約数の個数: 72

約数和(自身を含む): 43847575128

約数和(自身を除く): 24929713144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 83, 98, 112, 166, 196, 224, 332, 392, 581, 664, 784, 1162, 1328, 1568, 2324, 2656, 4067, 4648, 8134, 9296, 16268, 18592, 32536, 65072, 130144, 145361, 290722, 581444, 1017527, 1162888, 2035054, 2325776, 4070108, 4651552, 7122689, 8140216, 12064963, 14245378, 16280432, 24129926, 28490756, 32560864, 48259852, 56981512, 84454741, 96519704, 113963024, 168909482, 193039408, 227926048, 337818964, 386078816, 591183187, 675637928, 1182366374, 1351275856, 2364732748, 2702551712, 4729465496, 9458930992, 18917861984]

約数ペア:

[(1, 18917861984), (2, 9458930992), (4, 4729465496), (7, 2702551712), (8, 2364732748), (14, 1351275856), (16, 1182366374), (28, 675637928), (32, 591183187), (49, 386078816), (56, 337818964), (83, 227926048), (98, 193039408), (112, 168909482), (166, 113963024), (196, 96519704), (224, 84454741), (332, 56981512), (392, 48259852), (581, 32560864), (664, 28490756), (784, 24129926), (1162, 16280432), (1328, 14245378), (1568, 12064963), (2324, 8140216), (2656, 7122689), (4067, 4651552), (4648, 4070108), (8134, 2325776), (9296, 2035054), (16268, 1162888), (18592, 1017527), (32536, 581444), (65072, 290722), (130144, 145361)]