1221111

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:255

約数の個数: 24

約数和(自身を含む): 1916720

約数和(自身を除く): 695609

約数列:

[1, 3, 9, 19, 37, 57, 111, 171, 193, 333, 579, 703, 1737, 2109, 3667, 6327, 7141, 11001, 21423, 33003, 64269, 135679, 407037, 1221111]

約数ペア:

[(1, 1221111), (3, 407037), (9, 135679), (19, 64269), (37, 33003), (57, 21423), (111, 11001), (171, 7141), (193, 6327), (333, 3667), (579, 2109), (703, 1737)]