21195417

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1\times {\mathrm{659}}^1$

素因数の和:884

約数の個数: 16

約数和(自身を含む): 28892160

約数和(自身を除く): 7696743

約数列:

[1, 3, 71, 151, 213, 453, 659, 1977, 10721, 32163, 46789, 99509, 140367, 298527, 7065139, 21195417]

約数ペア:

[(1, 21195417), (3, 7065139), (71, 298527), (151, 140367), (213, 99509), (453, 46789), (659, 32163), (1977, 10721)]