21161854

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{40853}}^1$

素因数の和:40899

約数の個数: 16

約数和(自身を含む): 37258848

約数和(自身を除く): 16096994

約数列:

[1, 2, 7, 14, 37, 74, 259, 518, 40853, 81706, 285971, 571942, 1511561, 3023122, 10580927, 21161854]

約数ペア:

[(1, 21161854), (2, 10580927), (7, 3023122), (14, 1511561), (37, 571942), (74, 285971), (259, 81706), (518, 40853)]