18900105

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{180001}}^1$

素因数の和:180016

約数の個数: 16

約数和(自身を含む): 34560384

約数和(自身を除く): 15660279

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 180001, 540003, 900005, 1260007, 2700015, 3780021, 6300035, 18900105]

約数ペア:

[(1, 18900105), (3, 6300035), (5, 3780021), (7, 2700015), (15, 1260007), (21, 900005), (35, 540003), (105, 180001)]