19927565

素因数分解:

$5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{499}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 28044000

約数和(自身を除く): 8116435

約数列:

[1, 5, 7, 35, 49, 163, 245, 499, 815, 1141, 2495, 3493, 5705, 7987, 17465, 24451, 39935, 81337, 122255, 406685, 569359, 2846795, 3985513, 19927565]

約数ペア:

[(1, 19927565), (5, 3985513), (7, 2846795), (35, 569359), (49, 406685), (163, 122255), (245, 81337), (499, 39935), (815, 24451), (1141, 17465), (2495, 7987), (3493, 5705)]