21006818

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{151}}^1\times {\mathrm{523}}^1$

素因数の和:702

約数の個数: 32

約数和(自身を含む): 38231040

約数和(自身を除く): 17224222

約数列:

[1, 2, 7, 14, 19, 38, 133, 151, 266, 302, 523, 1046, 1057, 2114, 2869, 3661, 5738, 7322, 9937, 19874, 20083, 40166, 69559, 78973, 139118, 157946, 552811, 1105622, 1500487, 3000974, 10503409, 21006818]

約数ペア:

[(1, 21006818), (2, 10503409), (7, 3000974), (14, 1500487), (19, 1105622), (38, 552811), (133, 157946), (151, 139118), (266, 78973), (302, 69559), (523, 40166), (1046, 20083), (1057, 19874), (2114, 9937), (2869, 7322), (3661, 5738)]