21106220

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7703}}^1$

素因数の和:7849

約数の個数: 24

約数和(自身を含む): 44652384

約数和(自身を除く): 23546164

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 7703, 15406, 30812, 38515, 77030, 154060, 1055311, 2110622, 4221244, 5276555, 10553110, 21106220]

約数ペア:

[(1, 21106220), (2, 10553110), (4, 5276555), (5, 4221244), (10, 2110622), (20, 1055311), (137, 154060), (274, 77030), (548, 38515), (685, 30812), (1370, 15406), (2740, 7703)]