20201805

素因数分解:

$3^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1279}}^1$

素因数の和:1312

約数の個数: 48

約数和(自身を含む): 39137280

約数和(自身を除く): 18935475

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 243, 351, 405, 585, 1053, 1215, 1279, 1755, 3159, 3837, 5265, 6395, 11511, 15795, 16627, 19185, 34533, 49881, 57555, 83135, 103599, 149643, 172665, 249405, 310797, 448929, 517995, 748215, 1346787, 1553985, 2244645, 4040361, 6733935, 20201805]

約数ペア:

[(1, 20201805), (3, 6733935), (5, 4040361), (9, 2244645), (13, 1553985), (15, 1346787), (27, 748215), (39, 517995), (45, 448929), (65, 310797), (81, 249405), (117, 172665), (135, 149643), (195, 103599), (243, 83135), (351, 57555), (405, 49881), (585, 34533), (1053, 19185), (1215, 16627), (1279, 15795), (1755, 11511), (3159, 6395), (3837, 5265)]