18666207

素因数分解:

$3^4\times 7^2\times {\mathrm{4703}}^1$

素因数の和:4729

約数の個数: 30

約数和(自身を含む): 32443488

約数和(自身を除く): 13777281

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 441, 567, 1323, 3969, 4703, 14109, 32921, 42327, 98763, 126981, 230447, 296289, 380943, 691341, 888867, 2074023, 2666601, 6222069, 18666207]

約数ペア:

[(1, 18666207), (3, 6222069), (7, 2666601), (9, 2074023), (21, 888867), (27, 691341), (49, 380943), (63, 296289), (81, 230447), (147, 126981), (189, 98763), (441, 42327), (567, 32921), (1323, 14109), (3969, 4703)]