21716961

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{22003}}^1$

素因数の和:22060

約数の個数: 16

約数和(自身を含む): 33798144

約数和(自身を除く): 12081183

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 22003, 66009, 154021, 462063, 1034141, 3102423, 7238987, 21716961]

約数ペア:

[(1, 21716961), (3, 7238987), (7, 3102423), (21, 1034141), (47, 462063), (141, 154021), (329, 66009), (987, 22003)]