21788565

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{27407}}^1$

素因数の和:27468

約数の個数: 16

約数和(自身を含む): 35520768

約数和(自身を除く): 13732203

約数列:

[1, 3, 5, 15, 53, 159, 265, 795, 27407, 82221, 137035, 411105, 1452571, 4357713, 7262855, 21788565]

約数ペア:

[(1, 21788565), (3, 7262855), (5, 4357713), (15, 1452571), (53, 411105), (159, 137035), (265, 82221), (795, 27407)]