18774987

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{683}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 33685632

約数和(自身を除く): 14910645

約数列:

[1, 3, 7, 11, 17, 21, 33, 49, 51, 77, 119, 147, 187, 231, 357, 539, 561, 683, 833, 1309, 1617, 2049, 2499, 3927, 4781, 7513, 9163, 11611, 14343, 22539, 27489, 33467, 34833, 52591, 81277, 100401, 127721, 157773, 243831, 368137, 383163, 568939, 894047, 1104411, 1706817, 2682141, 6258329, 18774987]

約数ペア:

[(1, 18774987), (3, 6258329), (7, 2682141), (11, 1706817), (17, 1104411), (21, 894047), (33, 568939), (49, 383163), (51, 368137), (77, 243831), (119, 157773), (147, 127721), (187, 100401), (231, 81277), (357, 52591), (539, 34833), (561, 33467), (683, 27489), (833, 22539), (1309, 14343), (1617, 11611), (2049, 9163), (2499, 7513), (3927, 4781)]