21206961

素因数分解:

$3^3\times {\mathrm{233}}^1\times {\mathrm{3371}}^1$

素因数の和:3613

約数の個数: 16

約数和(自身を含む): 31561920

約数和(自身を除く): 10354959

約数列:

[1, 3, 9, 27, 233, 699, 2097, 3371, 6291, 10113, 30339, 91017, 785443, 2356329, 7068987, 21206961]

約数ペア:

[(1, 21206961), (3, 7068987), (9, 2356329), (27, 785443), (233, 91017), (699, 30339), (2097, 10113), (3371, 6291)]