1215981

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{547}}^1$

素因数の和:585

約数の個数: 24

約数和(自身を含む): 1994720

約数和(自身を除く): 778739

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 547, 741, 1641, 2223, 4923, 7111, 10393, 21333, 31179, 63999, 93537, 135109, 405327, 1215981]

約数ペア:

[(1, 1215981), (3, 405327), (9, 135109), (13, 93537), (19, 63999), (39, 31179), (57, 21333), (117, 10393), (171, 7111), (247, 4923), (547, 2223), (741, 1641)]