997642220

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{364103}}^1$

素因数の和:364249

約数の個数: 24

約数和(自身を含む): 2110346784

約数和(自身を除く): 1112704564

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 364103, 728206, 1456412, 1820515, 3641030, 7282060, 49882111, 99764222, 199528444, 249410555, 498821110, 997642220]

約数ペア:

[(1, 997642220), (2, 498821110), (4, 249410555), (5, 199528444), (10, 99764222), (20, 49882111), (137, 7282060), (274, 3641030), (548, 1820515), (685, 1456412), (1370, 728206), (2740, 364103)]