218193780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{519509}}^1$

素因数の和:519528

約数の個数: 48

約数和(自身を含む): 698221440

約数和(自身を除く): 480027660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 519509, 1039018, 1558527, 2078036, 2597545, 3117054, 3636563, 5195090, 6234108, 7273126, 7792635, 10390180, 10909689, 14546252, 15585270, 18182815, 21819378, 31170540, 36365630, 43638756, 54548445, 72731260, 109096890, 218193780]

約数ペア:

[(1, 218193780), (2, 109096890), (3, 72731260), (4, 54548445), (5, 43638756), (6, 36365630), (7, 31170540), (10, 21819378), (12, 18182815), (14, 15585270), (15, 14546252), (20, 10909689), (21, 10390180), (28, 7792635), (30, 7273126), (35, 6234108), (42, 5195090), (60, 3636563), (70, 3117054), (84, 2597545), (105, 2078036), (140, 1558527), (210, 1039018), (420, 519509)]