21030526

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{43}}^2\times {\mathrm{47}}^1$

素因数の和:157

約数の個数: 36

約数和(自身を含む): 36254736

約数和(自身を除く): 15224210

約数列:

[1, 2, 11, 22, 43, 47, 86, 94, 121, 242, 473, 517, 946, 1034, 1849, 2021, 3698, 4042, 5203, 5687, 10406, 11374, 20339, 22231, 40678, 44462, 86903, 173806, 223729, 244541, 447458, 489082, 955933, 1911866, 10515263, 21030526]

約数ペア:

[(1, 21030526), (2, 10515263), (11, 1911866), (22, 955933), (43, 489082), (47, 447458), (86, 244541), (94, 223729), (121, 173806), (242, 86903), (473, 44462), (517, 40678), (946, 22231), (1034, 20339), (1849, 11374), (2021, 10406), (3698, 5687), (4042, 5203)]