21158913

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{1621}}^1$

素因数の和:1872

約数の個数: 16

約数和(自身を含む): 29844800

約数和(自身を除く): 8685887

約数列:

[1, 3, 19, 57, 229, 687, 1621, 4351, 4863, 13053, 30799, 92397, 371209, 1113627, 7052971, 21158913]

約数ペア:

[(1, 21158913), (3, 7052971), (19, 1113627), (57, 371209), (229, 92397), (687, 30799), (1621, 13053), (4351, 4863)]