21559839

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{17401}}^1$

素因数の和:17470

約数の個数: 16

約数和(自身を含む): 33411840

約数和(自身を除く): 11852001

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 17401, 52203, 121807, 365421, 1026659, 3079977, 7186613, 21559839]

約数ペア:

[(1, 21559839), (3, 7186613), (7, 3079977), (21, 1026659), (59, 365421), (177, 121807), (413, 52203), (1239, 17401)]