21012478

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{9719}}^1$

素因数の和:9791

約数の個数: 16

約数和(自身を含む): 33592320

約数和(自身を除く): 12579842

約数列:

[1, 2, 23, 46, 47, 94, 1081, 2162, 9719, 19438, 223537, 447074, 456793, 913586, 10506239, 21012478]

約数ペア:

[(1, 21012478), (2, 10506239), (23, 913586), (46, 456793), (47, 447074), (94, 223537), (1081, 19438), (2162, 9719)]