12864140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{349}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 28812000

約数和(自身を除く): 15947860

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 97, 190, 194, 349, 380, 388, 485, 698, 970, 1396, 1745, 1843, 1940, 3490, 3686, 6631, 6980, 7372, 9215, 13262, 18430, 26524, 33155, 33853, 36860, 66310, 67706, 132620, 135412, 169265, 338530, 643207, 677060, 1286414, 2572828, 3216035, 6432070, 12864140]

約数ペア:

[(1, 12864140), (2, 6432070), (4, 3216035), (5, 2572828), (10, 1286414), (19, 677060), (20, 643207), (38, 338530), (76, 169265), (95, 135412), (97, 132620), (190, 67706), (194, 66310), (349, 36860), (380, 33853), (388, 33155), (485, 26524), (698, 18430), (970, 13262), (1396, 9215), (1745, 7372), (1843, 6980), (1940, 6631), (3490, 3686)]