81201560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{1031}}^1$

素因数の和:1232

約数の個数: 64

約数和(自身を含む): 200620800

約数和(自身を除く): 119419240

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 179, 220, 358, 440, 716, 895, 1031, 1432, 1790, 1969, 2062, 3580, 3938, 4124, 5155, 7160, 7876, 8248, 9845, 10310, 11341, 15752, 19690, 20620, 22682, 39380, 41240, 45364, 56705, 78760, 90728, 113410, 184549, 226820, 369098, 453640, 738196, 922745, 1476392, 1845490, 2030039, 3690980, 4060078, 7381960, 8120156, 10150195, 16240312, 20300390, 40600780, 81201560]

約数ペア:

[(1, 81201560), (2, 40600780), (4, 20300390), (5, 16240312), (8, 10150195), (10, 8120156), (11, 7381960), (20, 4060078), (22, 3690980), (40, 2030039), (44, 1845490), (55, 1476392), (88, 922745), (110, 738196), (179, 453640), (220, 369098), (358, 226820), (440, 184549), (716, 113410), (895, 90728), (1031, 78760), (1432, 56705), (1790, 45364), (1969, 41240), (2062, 39380), (3580, 22682), (3938, 20620), (4124, 19690), (5155, 15752), (7160, 11341), (7876, 10310), (8248, 9845)]