18128209

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{907}}^1$

素因数の和:1020

約数の個数: 16

約数和(自身を含む): 20920320

約数和(自身を除く): 2792111

約数列:

[1, 11, 23, 79, 253, 869, 907, 1817, 9977, 19987, 20861, 71653, 229471, 788183, 1648019, 18128209]

約数ペア:

[(1, 18128209), (11, 1648019), (23, 788183), (79, 229471), (253, 71653), (869, 20861), (907, 19987), (1817, 9977)]