19960990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{9833}}^1$

素因数の和:9876

約数の個数: 32

約数和(自身を含む): 42482880

約数和(自身を除く): 22521890

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 145, 203, 290, 406, 1015, 2030, 9833, 19666, 49165, 68831, 98330, 137662, 285157, 344155, 570314, 688310, 1425785, 1996099, 2851570, 3992198, 9980495, 19960990]

約数ペア:

[(1, 19960990), (2, 9980495), (5, 3992198), (7, 2851570), (10, 1996099), (14, 1425785), (29, 688310), (35, 570314), (58, 344155), (70, 285157), (145, 137662), (203, 98330), (290, 68831), (406, 49165), (1015, 19666), (2030, 9833)]