18131990

素因数分解:

$2^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{4093}}^1$

素因数の和:4543

約数の個数: 16

約数和(自身を含む): 32719248

約数和(自身を除く): 14587258

約数列:

[1, 2, 5, 10, 443, 886, 2215, 4093, 4430, 8186, 20465, 40930, 1813199, 3626398, 9065995, 18131990]

約数ペア:

[(1, 18131990), (2, 9065995), (5, 3626398), (10, 1813199), (443, 40930), (886, 20465), (2215, 8186), (4093, 4430)]