21155915

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{1823}}^1$

素因数の和:2050

約数の個数: 16

約数和(自身を含む): 27841536

約数和(自身を除く): 6685621

約数列:

[1, 5, 11, 55, 211, 1055, 1823, 2321, 9115, 11605, 20053, 100265, 384653, 1923265, 4231183, 21155915]

約数ペア:

[(1, 21155915), (5, 4231183), (11, 1923265), (55, 384653), (211, 100265), (1055, 20053), (1823, 11605), (2321, 9115)]