180666440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{2671}}^1$

素因数の和:2790

約数の個数: 64

約数和(自身を含む): 432864000

約数和(自身を除く): 252197560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 89, 95, 152, 178, 190, 356, 380, 445, 712, 760, 890, 1691, 1780, 2671, 3382, 3560, 5342, 6764, 8455, 10684, 13355, 13528, 16910, 21368, 26710, 33820, 50749, 53420, 67640, 101498, 106840, 202996, 237719, 253745, 405992, 475438, 507490, 950876, 1014980, 1188595, 1901752, 2029960, 2377190, 4516661, 4754380, 9033322, 9508760, 18066644, 22583305, 36133288, 45166610, 90333220, 180666440]

約数ペア:

[(1, 180666440), (2, 90333220), (4, 45166610), (5, 36133288), (8, 22583305), (10, 18066644), (19, 9508760), (20, 9033322), (38, 4754380), (40, 4516661), (76, 2377190), (89, 2029960), (95, 1901752), (152, 1188595), (178, 1014980), (190, 950876), (356, 507490), (380, 475438), (445, 405992), (712, 253745), (760, 237719), (890, 202996), (1691, 106840), (1780, 101498), (2671, 67640), (3382, 53420), (3560, 50749), (5342, 33820), (6764, 26710), (8455, 21368), (10684, 16910), (13355, 13528)]