39881961

素因数分解:

$3^2\times 7^1\times {\mathrm{443}}^1\times {\mathrm{1429}}^1$

素因数の和:1885

約数の個数: 24

約数和(自身を含む): 66031680

約数和(自身を除く): 26149719

約数列:

[1, 3, 7, 9, 21, 63, 443, 1329, 1429, 3101, 3987, 4287, 9303, 10003, 12861, 27909, 30009, 90027, 633047, 1899141, 4431329, 5697423, 13293987, 39881961]

約数ペア:

[(1, 39881961), (3, 13293987), (7, 5697423), (9, 4431329), (21, 1899141), (63, 633047), (443, 90027), (1329, 30009), (1429, 27909), (3101, 12861), (3987, 10003), (4287, 9303)]