21127496

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3833}}^1$

素因数の和:3905

約数の個数: 32

約数和(自身を含む): 43477560

約数和(自身を除く): 22350064

約数列:

[1, 2, 4, 8, 13, 26, 52, 53, 104, 106, 212, 424, 689, 1378, 2756, 3833, 5512, 7666, 15332, 30664, 49829, 99658, 199316, 203149, 398632, 406298, 812596, 1625192, 2640937, 5281874, 10563748, 21127496]

約数ペア:

[(1, 21127496), (2, 10563748), (4, 5281874), (8, 2640937), (13, 1625192), (26, 812596), (52, 406298), (53, 398632), (104, 203149), (106, 199316), (212, 99658), (424, 49829), (689, 30664), (1378, 15332), (2756, 7666), (3833, 5512)]