21000751898

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1\times {\mathrm{109469}}^1$

素因数の和:109742

約数の個数: 32

約数和(自身を含む): 36697847040

約数和(自身を除く): 15697095142

約数列:

[1, 2, 7, 14, 71, 142, 193, 386, 497, 994, 1351, 2702, 13703, 27406, 95921, 109469, 191842, 218938, 766283, 1532566, 7772299, 15544598, 21127517, 42255034, 54406093, 108812186, 147892619, 295785238, 1500053707, 3000107414, 10500375949, 21000751898]

約数ペア:

[(1, 21000751898), (2, 10500375949), (7, 3000107414), (14, 1500053707), (71, 295785238), (142, 147892619), (193, 108812186), (386, 54406093), (497, 42255034), (994, 21127517), (1351, 15544598), (2702, 7772299), (13703, 1532566), (27406, 766283), (95921, 218938), (109469, 191842)]