21666967

素因数分解:

$7^3\times {\mathrm{181}}^1\times {\mathrm{349}}^1$

素因数の和:551

約数の個数: 16

約数和(自身を含む): 25480000

約数和(自身を除く): 3813033

約数列:

[1, 7, 49, 181, 343, 349, 1267, 2443, 8869, 17101, 62083, 63169, 119707, 442183, 3095281, 21666967]

約数ペア:

[(1, 21666967), (7, 3095281), (49, 442183), (181, 119707), (343, 63169), (349, 62083), (1267, 17101), (2443, 8869)]