8989940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 20239632

約数和(自身を除く): 11249692

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 137, 170, 193, 274, 340, 386, 548, 685, 772, 965, 1370, 1930, 2329, 2740, 3281, 3860, 4658, 6562, 9316, 11645, 13124, 16405, 23290, 26441, 32810, 46580, 52882, 65620, 105764, 132205, 264410, 449497, 528820, 898994, 1797988, 2247485, 4494970, 8989940]

約数ペア:

[(1, 8989940), (2, 4494970), (4, 2247485), (5, 1797988), (10, 898994), (17, 528820), (20, 449497), (34, 264410), (68, 132205), (85, 105764), (137, 65620), (170, 52882), (193, 46580), (274, 32810), (340, 26441), (386, 23290), (548, 16405), (685, 13124), (772, 11645), (965, 9316), (1370, 6562), (1930, 4658), (2329, 3860), (2740, 3281)]