16974680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 22942120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 71, 86, 139, 142, 172, 215, 278, 284, 344, 355, 430, 556, 568, 695, 710, 860, 1112, 1390, 1420, 1720, 2780, 2840, 3053, 5560, 5977, 6106, 9869, 11954, 12212, 15265, 19738, 23908, 24424, 29885, 30530, 39476, 47816, 49345, 59770, 61060, 78952, 98690, 119540, 122120, 197380, 239080, 394760, 424367, 848734, 1697468, 2121835, 3394936, 4243670, 8487340, 16974680]

約数ペア:

[(1, 16974680), (2, 8487340), (4, 4243670), (5, 3394936), (8, 2121835), (10, 1697468), (20, 848734), (40, 424367), (43, 394760), (71, 239080), (86, 197380), (139, 122120), (142, 119540), (172, 98690), (215, 78952), (278, 61060), (284, 59770), (344, 49345), (355, 47816), (430, 39476), (556, 30530), (568, 29885), (695, 24424), (710, 23908), (860, 19738), (1112, 15265), (1390, 12212), (1420, 11954), (1720, 9869), (2780, 6106), (2840, 5977), (3053, 5560)]