19801780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{34141}}^1$

素因数の和:34179

約数の個数: 24

約数和(自身を含む): 43018920

約数和(自身を除く): 23217140

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 34141, 68282, 136564, 170705, 341410, 682820, 990089, 1980178, 3960356, 4950445, 9900890, 19801780]

約数ペア:

[(1, 19801780), (2, 9900890), (4, 4950445), (5, 3960356), (10, 1980178), (20, 990089), (29, 682820), (58, 341410), (116, 170705), (145, 136564), (290, 68282), (580, 34141)]