19917898

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{9949}}^1$

素因数の和:9982

約数の個数: 32

約数和(自身を含む): 40118400

約数和(自身を除く): 20200502

約数列:

[1, 2, 7, 11, 13, 14, 22, 26, 77, 91, 143, 154, 182, 286, 1001, 2002, 9949, 19898, 69643, 109439, 129337, 139286, 218878, 258674, 766073, 905359, 1422707, 1532146, 1810718, 2845414, 9958949, 19917898]

約数ペア:

[(1, 19917898), (2, 9958949), (7, 2845414), (11, 1810718), (13, 1532146), (14, 1422707), (22, 905359), (26, 766073), (77, 258674), (91, 218878), (143, 139286), (154, 129337), (182, 109439), (286, 69643), (1001, 19898), (2002, 9949)]