21316898

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{7901}}^1$

素因数の和:7993

約数の個数: 16

約数和(自身を含む): 34136640

約数和(自身を除く): 12819742

約数列:

[1, 2, 19, 38, 71, 142, 1349, 2698, 7901, 15802, 150119, 300238, 560971, 1121942, 10658449, 21316898]

約数ペア:

[(1, 21316898), (2, 10658449), (19, 1121942), (38, 560971), (71, 300238), (142, 150119), (1349, 15802), (2698, 7901)]