21038338

素因数分解:

$2^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{1361}}^1$

素因数の和:1553

約数の個数: 16

約数和(自身を含む): 32361120

約数和(自身を除く): 11322782

約数列:

[1, 2, 59, 118, 131, 262, 1361, 2722, 7729, 15458, 80299, 160598, 178291, 356582, 10519169, 21038338]

約数ペア:

[(1, 21038338), (2, 10519169), (59, 356582), (118, 178291), (131, 160598), (262, 80299), (1361, 15458), (2722, 7729)]