21030128

素因数分解:

$2^4\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1823}}^1$

素因数の和:1941

約数の個数: 40

約数和(自身を含む): 47044608

約数和(自身を除く): 26014480

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 103, 112, 206, 412, 721, 824, 1442, 1648, 1823, 2884, 3646, 5768, 7292, 11536, 12761, 14584, 25522, 29168, 51044, 102088, 187769, 204176, 375538, 751076, 1314383, 1502152, 2628766, 3004304, 5257532, 10515064, 21030128]

約数ペア:

[(1, 21030128), (2, 10515064), (4, 5257532), (7, 3004304), (8, 2628766), (14, 1502152), (16, 1314383), (28, 751076), (56, 375538), (103, 204176), (112, 187769), (206, 102088), (412, 51044), (721, 29168), (824, 25522), (1442, 14584), (1648, 12761), (1823, 11536), (2884, 7292), (3646, 5768)]