20871242

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{51407}}^1$

素因数の和:51445

約数の個数: 16

約数和(自身を含む): 37013760

約数和(自身を除く): 16142518

約数列:

[1, 2, 7, 14, 29, 58, 203, 406, 51407, 102814, 359849, 719698, 1490803, 2981606, 10435621, 20871242]

約数ペア:

[(1, 20871242), (2, 10435621), (7, 2981606), (14, 1490803), (29, 719698), (58, 359849), (203, 102814), (406, 51407)]