21821541

素因数分解:

$3^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{5741}}^1$

素因数の和:5932

約数の個数: 16

約数和(自身を含む): 33441408

約数和(自身を除く): 11619867

約数列:

[1, 3, 7, 21, 181, 543, 1267, 3801, 5741, 17223, 40187, 120561, 1039121, 3117363, 7273847, 21821541]

約数ペア:

[(1, 21821541), (3, 7273847), (7, 3117363), (21, 1039121), (181, 120561), (543, 40187), (1267, 17223), (3801, 5741)]