19640478

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{2081}}^1$

素因数の和:2121

約数の個数: 48

約数和(自身を含む): 46520208

約数和(自身を除く): 26879730

約数列:

[1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 121, 143, 242, 286, 363, 429, 726, 858, 1573, 2081, 3146, 4162, 4719, 6243, 9438, 12486, 22891, 27053, 45782, 54106, 68673, 81159, 137346, 162318, 251801, 297583, 503602, 595166, 755403, 892749, 1510806, 1785498, 3273413, 6546826, 9820239, 19640478]

約数ペア:

[(1, 19640478), (2, 9820239), (3, 6546826), (6, 3273413), (11, 1785498), (13, 1510806), (22, 892749), (26, 755403), (33, 595166), (39, 503602), (66, 297583), (78, 251801), (121, 162318), (143, 137346), (242, 81159), (286, 68673), (363, 54106), (429, 45782), (726, 27053), (858, 22891), (1573, 12486), (2081, 9438), (3146, 6243), (4162, 4719)]