21031055

素因数分解:

$5^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{421}}^1$

素因数の和:626

約数の個数: 16

約数和(自身を含む): 25806144

約数和(自身を除く): 4775089

約数列:

[1, 5, 97, 103, 421, 485, 515, 2105, 9991, 40837, 43363, 49955, 204185, 216815, 4206211, 21031055]

約数ペア:

[(1, 21031055), (5, 4206211), (97, 216815), (103, 204185), (421, 49955), (485, 43363), (515, 40837), (2105, 9991)]