21328438

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{4513}}^1$

素因数の和:4671

約数の個数: 16

約数和(自身を含む): 34125840

約数和(自身を除く): 12797402

約数列:

[1, 2, 17, 34, 139, 278, 2363, 4513, 4726, 9026, 76721, 153442, 627307, 1254614, 10664219, 21328438]

約数ペア:

[(1, 21328438), (2, 10664219), (17, 1254614), (34, 627307), (139, 153442), (278, 76721), (2363, 9026), (4513, 4726)]