1017940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{661}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 2669184

約数和(自身を除く): 1651244

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 661, 770, 1322, 1540, 2644, 3305, 4627, 6610, 7271, 9254, 13220, 14542, 18508, 23135, 29084, 36355, 46270, 50897, 72710, 92540, 101794, 145420, 203588, 254485, 508970, 1017940]

約数ペア:

[(1, 1017940), (2, 508970), (4, 254485), (5, 203588), (7, 145420), (10, 101794), (11, 92540), (14, 72710), (20, 50897), (22, 46270), (28, 36355), (35, 29084), (44, 23135), (55, 18508), (70, 14542), (77, 13220), (110, 9254), (140, 7271), (154, 6610), (220, 4627), (308, 3305), (385, 2644), (661, 1540), (770, 1322)]