21542801

素因数分解:

$7^3\times {\mathrm{181}}^1\times {\mathrm{347}}^1$

素因数の和:549

約数の個数: 16

約数和(自身を含む): 25334400

約数和(自身を除く): 3791599

約数列:

[1, 7, 49, 181, 343, 347, 1267, 2429, 8869, 17003, 62083, 62807, 119021, 439649, 3077543, 21542801]

約数ペア:

[(1, 21542801), (7, 3077543), (49, 439649), (181, 119021), (343, 62807), (347, 62083), (1267, 17003), (2429, 8869)]