20015468

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 19901332

約数列:

[1, 2, 4, 11, 22, 43, 44, 71, 86, 142, 149, 172, 284, 298, 473, 596, 781, 946, 1562, 1639, 1892, 3053, 3124, 3278, 6106, 6407, 6556, 10579, 12212, 12814, 21158, 25628, 33583, 42316, 67166, 70477, 116369, 134332, 140954, 232738, 281908, 454897, 465476, 909794, 1819588, 5003867, 10007734, 20015468]

約数ペア:

[(1, 20015468), (2, 10007734), (4, 5003867), (11, 1819588), (22, 909794), (43, 465476), (44, 454897), (71, 281908), (86, 232738), (142, 140954), (149, 134332), (172, 116369), (284, 70477), (298, 67166), (473, 42316), (596, 33583), (781, 25628), (946, 21158), (1562, 12814), (1639, 12212), (1892, 10579), (3053, 6556), (3124, 6407), (3278, 6106)]