21016985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{2917}}^1$

素因数の和:3064

約数の個数: 16

約数和(自身を含む): 27732672

約数和(自身を除く): 6715687

約数列:

[1, 5, 11, 55, 131, 655, 1441, 2917, 7205, 14585, 32087, 160435, 382127, 1910635, 4203397, 21016985]

約数ペア:

[(1, 21016985), (5, 4203397), (11, 1910635), (55, 382127), (131, 160435), (655, 32087), (1441, 14585), (2917, 7205)]