20565615

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{195863}}^1$

素因数の和:195878

約数の個数: 16

約数和(自身を含む): 37605888

約数和(自身を除く): 17040273

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 195863, 587589, 979315, 1371041, 2937945, 4113123, 6855205, 20565615]

約数ペア:

[(1, 20565615), (3, 6855205), (5, 4113123), (7, 2937945), (15, 1371041), (21, 979315), (35, 587589), (105, 195863)]