8391180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19979}}^1$

素因数の和:19998

約数の個数: 48

約数和(自身を含む): 26853120

約数和(自身を除く): 18461940

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, 19979, 39958, 59937, 79916, 99895, 119874, 139853, 199790, 239748, 279706, 299685, 399580, 419559, 559412, 599370, 699265, 839118, 1198740, 1398530, 1678236, 2097795, 2797060, 4195590, 8391180]

約数ペア:

[(1, 8391180), (2, 4195590), (3, 2797060), (4, 2097795), (5, 1678236), (6, 1398530), (7, 1198740), (10, 839118), (12, 699265), (14, 599370), (15, 559412), (20, 419559), (21, 399580), (28, 299685), (30, 279706), (35, 239748), (42, 199790), (60, 139853), (70, 119874), (84, 99895), (105, 79916), (140, 59937), (210, 39958), (420, 19979)]