861939

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:211

約数の個数: 24

約数和(自身を含む): 1375920

約数和(自身を除く): 513981

約数列:

[1, 3, 9, 13, 39, 53, 117, 139, 159, 417, 477, 689, 1251, 1807, 2067, 5421, 6201, 7367, 16263, 22101, 66303, 95771, 287313, 861939]

約数ペア:

[(1, 861939), (3, 287313), (9, 95771), (13, 66303), (39, 22101), (53, 16263), (117, 7367), (139, 6201), (159, 5421), (417, 2067), (477, 1807), (689, 1251)]