81681320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2297}}^1$

素因数の和:2442

約数の個数: 64

約数和(自身を含む): 211783680

約数和(自身を除く): 130102360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 127, 140, 254, 280, 508, 635, 889, 1016, 1270, 1778, 2297, 2540, 3556, 4445, 4594, 5080, 7112, 8890, 9188, 11485, 16079, 17780, 18376, 22970, 32158, 35560, 45940, 64316, 80395, 91880, 128632, 160790, 291719, 321580, 583438, 643160, 1166876, 1458595, 2042033, 2333752, 2917190, 4084066, 5834380, 8168132, 10210165, 11668760, 16336264, 20420330, 40840660, 81681320]

約数ペア:

[(1, 81681320), (2, 40840660), (4, 20420330), (5, 16336264), (7, 11668760), (8, 10210165), (10, 8168132), (14, 5834380), (20, 4084066), (28, 2917190), (35, 2333752), (40, 2042033), (56, 1458595), (70, 1166876), (127, 643160), (140, 583438), (254, 321580), (280, 291719), (508, 160790), (635, 128632), (889, 91880), (1016, 80395), (1270, 64316), (1778, 45940), (2297, 35560), (2540, 32158), (3556, 22970), (4445, 18376), (4594, 17780), (5080, 16079), (7112, 11485), (8890, 9188)]