21111286

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{65563}}^1$

素因数の和:65595

約数の個数: 16

約数和(自身を含む): 37764864

約数和(自身を除く): 16653578

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 65563, 131126, 458941, 917882, 1507949, 3015898, 10555643, 21111286]

約数ペア:

[(1, 21111286), (2, 10555643), (7, 3015898), (14, 1507949), (23, 917882), (46, 458941), (161, 131126), (322, 65563)]