3990140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2591}}^1$

素因数の和:2618

約数の個数: 48

約数和(自身を含む): 10450944

約数和(自身を除く): 6460804

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, 770, 1540, 2591, 5182, 10364, 12955, 18137, 25910, 28501, 36274, 51820, 57002, 72548, 90685, 114004, 142505, 181370, 199507, 285010, 362740, 399014, 570020, 798028, 997535, 1995070, 3990140]

約数ペア:

[(1, 3990140), (2, 1995070), (4, 997535), (5, 798028), (7, 570020), (10, 399014), (11, 362740), (14, 285010), (20, 199507), (22, 181370), (28, 142505), (35, 114004), (44, 90685), (55, 72548), (70, 57002), (77, 51820), (110, 36274), (140, 28501), (154, 25910), (220, 18137), (308, 12955), (385, 10364), (770, 5182), (1540, 2591)]