1278621

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:221

約数の個数: 24

約数和(自身を含む): 2002104

約数和(自身を除く): 723483

約数列:

[1, 3, 9, 17, 51, 61, 137, 153, 183, 411, 549, 1037, 1233, 2329, 3111, 6987, 8357, 9333, 20961, 25071, 75213, 142069, 426207, 1278621]

約数ペア:

[(1, 1278621), (3, 426207), (9, 142069), (17, 75213), (51, 25071), (61, 20961), (137, 9333), (153, 8357), (183, 6987), (411, 3111), (549, 2329), (1037, 1233)]