20507228

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{15583}}^1$

素因数の和:15641

約数の個数: 24

約数和(自身を含む): 41889792

約数和(自身を除く): 21382564

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 329, 658, 1316, 15583, 31166, 62332, 109081, 218162, 436324, 732401, 1464802, 2929604, 5126807, 10253614, 20507228]

約数ペア:

[(1, 20507228), (2, 10253614), (4, 5126807), (7, 2929604), (14, 1464802), (28, 732401), (47, 436324), (94, 218162), (188, 109081), (329, 62332), (658, 31166), (1316, 15583)]