20859867

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19477}}^1$

素因数の和:19507

約数の個数: 24

約数和(自身を含む): 36462816

約数和(自身を除く): 15602949

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19477, 58431, 136339, 175293, 331109, 409017, 993327, 1227051, 2317763, 2979981, 6953289, 20859867]

約数ペア:

[(1, 20859867), (3, 6953289), (7, 2979981), (9, 2317763), (17, 1227051), (21, 993327), (51, 409017), (63, 331109), (119, 175293), (153, 136339), (357, 58431), (1071, 19477)]