21750105

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{111539}}^1$

素因数の和:111560

約数の個数: 16

約数和(自身を含む): 37477440

約数和(自身を除く): 15727335

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 111539, 334617, 557695, 1450007, 1673085, 4350021, 7250035, 21750105]

約数ペア:

[(1, 21750105), (3, 7250035), (5, 4350021), (13, 1673085), (15, 1450007), (39, 557695), (65, 334617), (195, 111539)]