18987717

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{29167}}^1$

素因数の和:29208

約数の個数: 16

約数和(自身を含む): 29868032

約数和(自身を除く): 10880315

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 29167, 87501, 204169, 612507, 904177, 2712531, 6329239, 18987717]

約数ペア:

[(1, 18987717), (3, 6329239), (7, 2712531), (21, 904177), (31, 612507), (93, 204169), (217, 87501), (651, 29167)]