19582780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1021}}^1$

素因数の和:1174

約数の個数: 48

約数和(自身を含む): 47388096

約数和(自身を除く): 27805316

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 959, 1021, 1370, 1918, 2042, 2740, 3836, 4084, 4795, 5105, 7147, 9590, 10210, 14294, 19180, 20420, 28588, 35735, 71470, 139877, 142940, 279754, 559508, 699385, 979139, 1398770, 1958278, 2797540, 3916556, 4895695, 9791390, 19582780]

約数ペア:

[(1, 19582780), (2, 9791390), (4, 4895695), (5, 3916556), (7, 2797540), (10, 1958278), (14, 1398770), (20, 979139), (28, 699385), (35, 559508), (70, 279754), (137, 142940), (140, 139877), (274, 71470), (548, 35735), (685, 28588), (959, 20420), (1021, 19180), (1370, 14294), (1918, 10210), (2042, 9590), (2740, 7147), (3836, 5105), (4084, 4795)]