9871911

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2207}}^1$

素因数の和:2291

約数の個数: 24

約数和(自身を含む): 16533504

約数和(自身を除く): 6661593

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 2207, 4473, 6621, 15449, 19863, 46347, 139041, 156697, 470091, 1096879, 1410273, 3290637, 9871911]

約数ペア:

[(1, 9871911), (3, 3290637), (7, 1410273), (9, 1096879), (21, 470091), (63, 156697), (71, 139041), (213, 46347), (497, 19863), (639, 15449), (1491, 6621), (2207, 4473)]