21897255

素因数分解:

$3^1\times 5^1\times {\mathrm{881}}^1\times {\mathrm{1657}}^1$

素因数の和:2546

約数の個数: 16

約数和(自身を含む): 35096544

約数和(自身を除く): 13199289

約数列:

[1, 3, 5, 15, 881, 1657, 2643, 4405, 4971, 8285, 13215, 24855, 1459817, 4379451, 7299085, 21897255]

約数ペア:

[(1, 21897255), (3, 7299085), (5, 4379451), (15, 1459817), (881, 24855), (1657, 13215), (2643, 8285), (4405, 4971)]