20782413

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:215

約数の個数: 40

約数和(自身を含む): 32617728

約数和(自身を除く): 11835315

約数列:

[1, 3, 9, 27, 47, 53, 81, 103, 141, 159, 309, 423, 477, 927, 1269, 1431, 2491, 2781, 3807, 4293, 4841, 5459, 7473, 8343, 14523, 16377, 22419, 43569, 49131, 67257, 130707, 147393, 201771, 256573, 392121, 442179, 769719, 2309157, 6927471, 20782413]

約数ペア:

[(1, 20782413), (3, 6927471), (9, 2309157), (27, 769719), (47, 442179), (53, 392121), (81, 256573), (103, 201771), (141, 147393), (159, 130707), (309, 67257), (423, 49131), (477, 43569), (927, 22419), (1269, 16377), (1431, 14523), (2491, 8343), (2781, 7473), (3807, 5459), (4293, 4841)]