20173878921

素因数分解:

$3^1\times 7^1\times {\mathrm{881}}^1\times {\mathrm{1090421}}^1$

素因数の和:1091312

約数の個数: 16

約数和(自身を含む): 30776070528

約数和(自身を除く): 10602191607

約数列:

[1, 3, 7, 21, 881, 2643, 6167, 18501, 1090421, 3271263, 7632947, 22898841, 960660901, 2881982703, 6724626307, 20173878921]

約数ペア:

[(1, 20173878921), (3, 6724626307), (7, 2881982703), (21, 960660901), (881, 22898841), (2643, 7632947), (6167, 3271263), (18501, 1090421)]