21071253

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{24473}}^1$

素因数の和:24524

約数の個数: 16

約数和(自身を含む): 32893056

約数和(自身を除く): 11821803

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 24473, 73419, 171311, 513933, 1003393, 3010179, 7023751, 21071253]

約数ペア:

[(1, 21071253), (3, 7023751), (7, 3010179), (21, 1003393), (41, 513933), (123, 171311), (287, 73419), (861, 24473)]