21245848

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{727}}^1$

素因数の和:1027

約数の個数: 32

約数和(自身を含む): 43112160

約数和(自身を除く): 21866312

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 281, 562, 727, 1124, 1454, 2248, 2908, 3653, 5816, 7306, 9451, 14612, 18902, 29224, 37804, 75608, 204287, 408574, 817148, 1634296, 2655731, 5311462, 10622924, 21245848]

約数ペア:

[(1, 21245848), (2, 10622924), (4, 5311462), (8, 2655731), (13, 1634296), (26, 817148), (52, 408574), (104, 204287), (281, 75608), (562, 37804), (727, 29224), (1124, 18902), (1454, 14612), (2248, 9451), (2908, 7306), (3653, 5816)]