20105391

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{4079}}^1$

素因数の和:4166

約数の個数: 16

約数和(自身を含む): 28200960

約数和(自身を除く): 8095569

約数列:

[1, 3, 31, 53, 93, 159, 1643, 4079, 4929, 12237, 126449, 216187, 379347, 648561, 6701797, 20105391]

約数ペア:

[(1, 20105391), (3, 6701797), (31, 648561), (53, 379347), (93, 216187), (159, 126449), (1643, 12237), (4079, 4929)]