21382689

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1\times {\mathrm{661}}^1$

素因数の和:968

約数の個数: 16

約数和(自身を含む): 29361024

約数和(自身を除く): 7978335

約数列:

[1, 3, 41, 123, 263, 661, 789, 1983, 10783, 27101, 32349, 81303, 173843, 521529, 7127563, 21382689]

約数ペア:

[(1, 21382689), (3, 7127563), (41, 521529), (123, 173843), (263, 81303), (661, 32349), (789, 27101), (1983, 10783)]