21104216

素因数分解:

$2^3\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1913}}^1$

素因数の和:2123

約数の個数: 32

約数和(自身を含む): 45476640

約数和(自身を除く): 24372424

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 197, 394, 788, 1379, 1576, 1913, 2758, 3826, 5516, 7652, 11032, 13391, 15304, 26782, 53564, 107128, 376861, 753722, 1507444, 2638027, 3014888, 5276054, 10552108, 21104216]

約数ペア:

[(1, 21104216), (2, 10552108), (4, 5276054), (7, 3014888), (8, 2638027), (14, 1507444), (28, 753722), (56, 376861), (197, 107128), (394, 53564), (788, 26782), (1379, 15304), (1576, 13391), (1913, 11032), (2758, 7652), (3826, 5516)]