81315668

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1\times {\mathrm{433}}^1$

素因数の和:816

約数の個数: 48

約数和(自身を含む): 172072320

約数和(自身を除く): 90756652

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 353, 433, 532, 706, 866, 1412, 1732, 2471, 3031, 4942, 6062, 6707, 8227, 9884, 12124, 13414, 16454, 26828, 32908, 46949, 57589, 93898, 115178, 152849, 187796, 230356, 305698, 611396, 1069943, 2139886, 2904131, 4279772, 5808262, 11616524, 20328917, 40657834, 81315668]

約数ペア:

[(1, 81315668), (2, 40657834), (4, 20328917), (7, 11616524), (14, 5808262), (19, 4279772), (28, 2904131), (38, 2139886), (76, 1069943), (133, 611396), (266, 305698), (353, 230356), (433, 187796), (532, 152849), (706, 115178), (866, 93898), (1412, 57589), (1732, 46949), (2471, 32908), (3031, 26828), (4942, 16454), (6062, 13414), (6707, 12124), (8227, 9884)]