19847553

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 30108672

約数和(自身を除く): 10261119

約数列:

[1, 3, 11, 33, 43, 71, 129, 197, 213, 473, 591, 781, 1419, 2167, 2343, 3053, 6501, 8471, 9159, 13987, 25413, 33583, 41961, 93181, 100749, 153857, 279543, 461571, 601441, 1804323, 6615851, 19847553]

約数ペア:

[(1, 19847553), (3, 6615851), (11, 1804323), (33, 601441), (43, 461571), (71, 279543), (129, 153857), (197, 100749), (213, 93181), (473, 41961), (591, 33583), (781, 25413), (1419, 13987), (2167, 9159), (2343, 8471), (3053, 6501)]