21379761

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3583}}^1$

素因数の和:3622

約数の個数: 32

約数和(自身を含む): 36126720

約数和(自身を除く): 14746959

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 117, 153, 221, 351, 459, 663, 1989, 3583, 5967, 10749, 32247, 46579, 60911, 96741, 139737, 182733, 419211, 548199, 791843, 1257633, 1644597, 2375529, 7126587, 21379761]

約数ペア:

[(1, 21379761), (3, 7126587), (9, 2375529), (13, 1644597), (17, 1257633), (27, 791843), (39, 548199), (51, 419211), (117, 182733), (153, 139737), (221, 96741), (351, 60911), (459, 46579), (663, 32247), (1989, 10749), (3583, 5967)]