71640207

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{12457}}^1$

素因数の和:12540

約数の個数: 20

約数和(自身を含む): 108534096

約数和(自身を除く): 36893889

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 5751, 12457, 37371, 112113, 336339, 884447, 1009017, 2653341, 7960023, 23880069, 71640207]

約数ペア:

[(1, 71640207), (3, 23880069), (9, 7960023), (27, 2653341), (71, 1009017), (81, 884447), (213, 336339), (639, 112113), (1917, 37371), (5751, 12457)]