21107908

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{1123}}^1$

素因数の和:1291

約数の個数: 24

約数和(自身を含む): 38269952

約数和(自身を除く): 17162044

約数列:

[1, 2, 4, 37, 74, 127, 148, 254, 508, 1123, 2246, 4492, 4699, 9398, 18796, 41551, 83102, 142621, 166204, 285242, 570484, 5276977, 10553954, 21107908]

約数ペア:

[(1, 21107908), (2, 10553954), (4, 5276977), (37, 570484), (74, 285242), (127, 166204), (148, 142621), (254, 83102), (508, 41551), (1123, 18796), (2246, 9398), (4492, 4699)]