21684447

素因数分解:

$3^2\times {\mathrm{59}}^1\times {\mathrm{97}}^1\times {\mathrm{421}}^1$

素因数の和:583

約数の個数: 24

約数和(自身を含む): 32257680

約数和(自身を除く): 10573233

約数列:

[1, 3, 9, 59, 97, 177, 291, 421, 531, 873, 1263, 3789, 5723, 17169, 24839, 40837, 51507, 74517, 122511, 223551, 367533, 2409383, 7228149, 21684447]

約数ペア:

[(1, 21684447), (3, 7228149), (9, 2409383), (59, 367533), (97, 223551), (177, 122511), (291, 74517), (421, 51507), (531, 40837), (873, 24839), (1263, 17169), (3789, 5723)]