20008902305

素因数分解:

$5^1\times 7^2\times {\mathrm{283}}^1\times {\mathrm{288583}}^1$

素因数の和:288885

約数の個数: 24

約数和(自身を含む): 28029586752

約数和(自身を除く): 8020684447

約数列:

[1, 5, 7, 35, 49, 245, 283, 1415, 1981, 9905, 13867, 69335, 288583, 1442915, 2020081, 10100405, 14140567, 70702835, 81668989, 408344945, 571682923, 2858414615, 4001780461, 20008902305]

約数ペア:

[(1, 20008902305), (5, 4001780461), (7, 2858414615), (35, 571682923), (49, 408344945), (245, 81668989), (283, 70702835), (1415, 14140567), (1981, 10100405), (9905, 2020081), (13867, 1442915), (69335, 288583)]