21097730

素因数分解:

$2^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{28901}}^1$

素因数の和:28981

約数の個数: 16

約数和(自身を含む): 38497464

約数和(自身を除く): 17399734

約数列:

[1, 2, 5, 10, 73, 146, 365, 730, 28901, 57802, 144505, 289010, 2109773, 4219546, 10548865, 21097730]

約数ペア:

[(1, 21097730), (2, 10548865), (5, 4219546), (10, 2109773), (73, 289010), (146, 144505), (365, 57802), (730, 28901)]