291213

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:169

約数の個数: 24

約数和(自身を含む): 480480

約数和(自身を除く): 189267

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 131, 171, 247, 393, 741, 1179, 1703, 2223, 2489, 5109, 7467, 15327, 22401, 32357, 97071, 291213]

約数ペア:

[(1, 291213), (3, 97071), (9, 32357), (13, 22401), (19, 15327), (39, 7467), (57, 5109), (117, 2489), (131, 2223), (171, 1703), (247, 1179), (393, 741)]