21249224

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{277}}^1$

素因数の和:549

約数の個数: 32

約数和(自身を含む): 41099520

約数和(自身を除く): 19850296

約数列:

[1, 2, 4, 8, 43, 86, 172, 223, 277, 344, 446, 554, 892, 1108, 1784, 2216, 9589, 11911, 19178, 23822, 38356, 47644, 61771, 76712, 95288, 123542, 247084, 494168, 2656153, 5312306, 10624612, 21249224]

約数ペア:

[(1, 21249224), (2, 10624612), (4, 5312306), (8, 2656153), (43, 494168), (86, 247084), (172, 123542), (223, 95288), (277, 76712), (344, 61771), (446, 47644), (554, 38356), (892, 23822), (1108, 19178), (1784, 11911), (2216, 9589)]