20124881413

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{337}}^1\times {\mathrm{21169}}^1$

素因数の和:21557

約数の個数: 32

約数和(自身を含む): 25645168640

約数和(自身を除く): 5520287227

約数列:

[1, 7, 13, 31, 91, 217, 337, 403, 2359, 2821, 4381, 10447, 21169, 30667, 73129, 135811, 148183, 275197, 656239, 950677, 1926379, 4593673, 7133953, 8531107, 49937671, 59717749, 92741389, 221152543, 649189723, 1548067801, 2874983059, 20124881413]

約数ペア:

[(1, 20124881413), (7, 2874983059), (13, 1548067801), (31, 649189723), (91, 221152543), (217, 92741389), (337, 59717749), (403, 49937671), (2359, 8531107), (2821, 7133953), (4381, 4593673), (10447, 1926379), (21169, 950677), (30667, 656239), (73129, 275197), (135811, 148183)]