20187318512

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{213523}}^1$

素因数の和:213861

約数の個数: 40

約数和(自身を含む): 41304082560

約数和(自身を除く): 21116764048

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 311, 622, 1244, 2488, 4976, 5909, 11818, 23636, 47272, 94544, 213523, 427046, 854092, 1708184, 3416368, 4056937, 8113874, 16227748, 32455496, 64910992, 66405653, 132811306, 265622612, 531245224, 1062490448, 1261707407, 2523414814, 5046829628, 10093659256, 20187318512]

約数ペア:

[(1, 20187318512), (2, 10093659256), (4, 5046829628), (8, 2523414814), (16, 1261707407), (19, 1062490448), (38, 531245224), (76, 265622612), (152, 132811306), (304, 66405653), (311, 64910992), (622, 32455496), (1244, 16227748), (2488, 8113874), (4976, 4056937), (5909, 3416368), (11818, 1708184), (23636, 854092), (47272, 427046), (94544, 213523)]