19713869

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1\times {\mathrm{223}}^1$

素因数の和:476

約数の個数: 16

約数和(自身を含む): 23073792

約数和(自身を除く): 3359923

約数列:

[1, 7, 73, 173, 223, 511, 1211, 1561, 12629, 16279, 38579, 88403, 113953, 270053, 2816267, 19713869]

約数ペア:

[(1, 19713869), (7, 2816267), (73, 270053), (173, 113953), (223, 88403), (511, 38579), (1211, 16279), (1561, 12629)]