21087416

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{19819}}^1$

素因数の和:19851

約数の個数: 32

約数和(自身を含む): 47568000

約数和(自身を除く): 26480584

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 19819, 39638, 79276, 138733, 158552, 277466, 376561, 554932, 753122, 1109864, 1506244, 2635927, 3012488, 5271854, 10543708, 21087416]

約数ペア:

[(1, 21087416), (2, 10543708), (4, 5271854), (7, 3012488), (8, 2635927), (14, 1506244), (19, 1109864), (28, 753122), (38, 554932), (56, 376561), (76, 277466), (133, 158552), (152, 138733), (266, 79276), (532, 39638), (1064, 19819)]