18871418

素因数分解:

$2^1\times {\mathrm{197}}^1\times {\mathrm{211}}^1\times {\mathrm{227}}^1$

素因数の和:637

約数の個数: 16

約数和(自身を含む): 28711584

約数和(自身を除く): 9840166

約数列:

[1, 2, 197, 211, 227, 394, 422, 454, 41567, 44719, 47897, 83134, 89438, 95794, 9435709, 18871418]

約数ペア:

[(1, 18871418), (2, 9435709), (197, 95794), (211, 89438), (227, 83134), (394, 47897), (422, 44719), (454, 41567)]