21000508794

素因数分解:

$2^1\times 3^3\times {\mathrm{71}}^1\times {\mathrm{257}}^1\times {\mathrm{21313}}^1$

素因数の和:21652

約数の個数: 64

約数和(自身を含む): 47511463680

約数和(自身を除く): 26510954886

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 142, 213, 257, 426, 514, 639, 771, 1278, 1542, 1917, 2313, 3834, 4626, 6939, 13878, 18247, 21313, 36494, 42626, 54741, 63939, 109482, 127878, 164223, 191817, 328446, 383634, 492669, 575451, 985338, 1150902, 1513223, 3026446, 4539669, 5477441, 9079338, 10954882, 13619007, 16432323, 27238014, 32864646, 40857021, 49296969, 81714042, 98593938, 147890907, 295781814, 388898311, 777796622, 1166694933, 2333389866, 3500084799, 7000169598, 10500254397, 21000508794]

約数ペア:

[(1, 21000508794), (2, 10500254397), (3, 7000169598), (6, 3500084799), (9, 2333389866), (18, 1166694933), (27, 777796622), (54, 388898311), (71, 295781814), (142, 147890907), (213, 98593938), (257, 81714042), (426, 49296969), (514, 40857021), (639, 32864646), (771, 27238014), (1278, 16432323), (1542, 13619007), (1917, 10954882), (2313, 9079338), (3834, 5477441), (4626, 4539669), (6939, 3026446), (13878, 1513223), (18247, 1150902), (21313, 985338), (36494, 575451), (42626, 492669), (54741, 383634), (63939, 328446), (109482, 191817), (127878, 164223)]