217871423

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{148921}}^1$

素因数の和:148958

約数の個数: 16

約数和(自身を含む): 285930240

約数和(自身を除く): 68058817

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 148921, 1042447, 1638131, 2829499, 11466917, 19806493, 31124489, 217871423]

約数ペア:

[(1, 217871423), (7, 31124489), (11, 19806493), (19, 11466917), (77, 2829499), (133, 1638131), (209, 1042447), (1463, 148921)]