21165693

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1\times {\mathrm{761}}^1$

素因数の和:964

約数の個数: 16

約数和(自身を含む): 28870656

約数和(自身を除く): 7704963

約数列:

[1, 3, 73, 127, 219, 381, 761, 2283, 9271, 27813, 55553, 96647, 166659, 289941, 7055231, 21165693]

約数ペア:

[(1, 21165693), (3, 7055231), (73, 289941), (127, 166659), (219, 96647), (381, 55553), (761, 27813), (2283, 9271)]