21274778

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{613}}^1$

素因数の和:726

約数の個数: 32

約数和(自身を含む): 38077824

約数和(自身を除く): 16803046

約数列:

[1, 2, 7, 14, 37, 67, 74, 134, 259, 469, 518, 613, 938, 1226, 2479, 4291, 4958, 8582, 17353, 22681, 34706, 41071, 45362, 82142, 158767, 287497, 317534, 574994, 1519627, 3039254, 10637389, 21274778]

約数ペア:

[(1, 21274778), (2, 10637389), (7, 3039254), (14, 1519627), (37, 574994), (67, 317534), (74, 287497), (134, 158767), (259, 82142), (469, 45362), (518, 41071), (613, 34706), (938, 22681), (1226, 17353), (2479, 8582), (4291, 4958)]