21125906

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{4861}}^1$

素因数の和:4957

約数の個数: 16

約数和(自身を含む): 33081048

約数和(自身を除く): 11955142

約数列:

[1, 2, 41, 53, 82, 106, 2173, 4346, 4861, 9722, 199301, 257633, 398602, 515266, 10562953, 21125906]

約数ペア:

[(1, 21125906), (2, 10562953), (41, 515266), (53, 398602), (82, 257633), (106, 199301), (2173, 9722), (4346, 4861)]