21730149

素因数分解:

$3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{2633}}^1$

素因数の和:2777

約数の個数: 24

約数和(自身を含む): 36159552

約数和(自身を除く): 14429403

約数列:

[1, 3, 7, 9, 21, 63, 131, 393, 917, 1179, 2633, 2751, 7899, 8253, 18431, 23697, 55293, 165879, 344923, 1034769, 2414461, 3104307, 7243383, 21730149]

約数ペア:

[(1, 21730149), (3, 7243383), (7, 3104307), (9, 2414461), (21, 1034769), (63, 344923), (131, 165879), (393, 55293), (917, 23697), (1179, 18431), (2633, 8253), (2751, 7899)]