18959941

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:122

約数の個数: 48

約数和(自身を含む): 26984448

約数和(自身を除く): 8024507

約数列:

[1, 7, 11, 13, 31, 47, 77, 91, 143, 169, 217, 329, 341, 403, 517, 611, 1001, 1183, 1457, 1859, 2387, 2821, 3619, 4277, 4433, 5239, 6721, 7943, 10199, 13013, 16027, 18941, 31031, 36673, 47047, 55601, 57629, 87373, 112189, 132587, 208351, 246233, 403403, 611611, 1458457, 1723631, 2708563, 18959941]

約数ペア:

[(1, 18959941), (7, 2708563), (11, 1723631), (13, 1458457), (31, 611611), (47, 403403), (77, 246233), (91, 208351), (143, 132587), (169, 112189), (217, 87373), (329, 57629), (341, 55601), (403, 47047), (517, 36673), (611, 31031), (1001, 18941), (1183, 16027), (1457, 13013), (1859, 10199), (2387, 7943), (2821, 6721), (3619, 5239), (4277, 4433)]