40668220

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{20963}}^1$

素因数の和:21069

約数の個数: 24

約数和(自身を含む): 86287824

約数和(自身を除く): 45619604

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 20963, 41926, 83852, 104815, 209630, 419260, 2033411, 4066822, 8133644, 10167055, 20334110, 40668220]

約数ペア:

[(1, 40668220), (2, 20334110), (4, 10167055), (5, 8133644), (10, 4066822), (20, 2033411), (97, 419260), (194, 209630), (388, 104815), (485, 83852), (970, 41926), (1940, 20963)]