280149320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{3557}}^1$

素因数の和:3758

約数の個数: 64

約数和(自身を含む): 691675200

約数和(自身を除く): 411525880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 179, 220, 358, 440, 716, 895, 1432, 1790, 1969, 3557, 3580, 3938, 7114, 7160, 7876, 9845, 14228, 15752, 17785, 19690, 28456, 35570, 39127, 39380, 71140, 78254, 78760, 142280, 156508, 195635, 313016, 391270, 636703, 782540, 1273406, 1565080, 2546812, 3183515, 5093624, 6367030, 7003733, 12734060, 14007466, 25468120, 28014932, 35018665, 56029864, 70037330, 140074660, 280149320]

約数ペア:

[(1, 280149320), (2, 140074660), (4, 70037330), (5, 56029864), (8, 35018665), (10, 28014932), (11, 25468120), (20, 14007466), (22, 12734060), (40, 7003733), (44, 6367030), (55, 5093624), (88, 3183515), (110, 2546812), (179, 1565080), (220, 1273406), (358, 782540), (440, 636703), (716, 391270), (895, 313016), (1432, 195635), (1790, 156508), (1969, 142280), (3557, 78760), (3580, 78254), (3938, 71140), (7114, 39380), (7160, 39127), (7876, 35570), (9845, 28456), (14228, 19690), (15752, 17785)]