38781740

素因数分解:

$2^2\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1997}}^1$

素因数の和:2977

約数の個数: 24

約数和(自身を含む): 81566352

約数和(自身を除く): 42784612

約数列:

[1, 2, 4, 5, 10, 20, 971, 1942, 1997, 3884, 3994, 4855, 7988, 9710, 9985, 19420, 19970, 39940, 1939087, 3878174, 7756348, 9695435, 19390870, 38781740]

約数ペア:

[(1, 38781740), (2, 19390870), (4, 9695435), (5, 7756348), (10, 3878174), (20, 1939087), (971, 39940), (1942, 19970), (1997, 19420), (3884, 9985), (3994, 9710), (4855, 7988)]