19978112

素因数分解:

$2^7\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2027}}^1$

素因数の和:2059

約数の個数: 64

約数和(自身を含む): 49645440

約数和(自身を除く): 29667328

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 128, 154, 176, 224, 308, 352, 448, 616, 704, 896, 1232, 1408, 2027, 2464, 4054, 4928, 8108, 9856, 14189, 16216, 22297, 28378, 32432, 44594, 56756, 64864, 89188, 113512, 129728, 156079, 178376, 227024, 259456, 312158, 356752, 454048, 624316, 713504, 908096, 1248632, 1427008, 1816192, 2497264, 2854016, 4994528, 9989056, 19978112]

約数ペア:

[(1, 19978112), (2, 9989056), (4, 4994528), (7, 2854016), (8, 2497264), (11, 1816192), (14, 1427008), (16, 1248632), (22, 908096), (28, 713504), (32, 624316), (44, 454048), (56, 356752), (64, 312158), (77, 259456), (88, 227024), (112, 178376), (128, 156079), (154, 129728), (176, 113512), (224, 89188), (308, 64864), (352, 56756), (448, 44594), (616, 32432), (704, 28378), (896, 22297), (1232, 16216), (1408, 14189), (2027, 9856), (2464, 8108), (4054, 4928)]