21080223

素因数分解:

$3^3\times {\mathrm{173}}^1\times {\mathrm{4513}}^1$

素因数の和:4695

約数の個数: 16

約数和(自身を含む): 31417440

約数和(自身を除く): 10337217

約数列:

[1, 3, 9, 27, 173, 519, 1557, 4513, 4671, 13539, 40617, 121851, 780749, 2342247, 7026741, 21080223]

約数ペア:

[(1, 21080223), (3, 7026741), (9, 2342247), (27, 780749), (173, 121851), (519, 40617), (1557, 13539), (4513, 4671)]