21311121

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{3019}}^1$

素因数の和:3216

約数の個数: 16

約数和(自身を含む): 30779840

約数和(自身を除く): 9468719

約数列:

[1, 3, 13, 39, 181, 543, 2353, 3019, 7059, 9057, 39247, 117741, 546439, 1639317, 7103707, 21311121]

約数ペア:

[(1, 21311121), (3, 7103707), (13, 1639317), (39, 546439), (181, 117741), (543, 39247), (2353, 9057), (3019, 7059)]