21392506

素因数分解:

$2^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1\times {\mathrm{353}}^1$

素因数の和:705

約数の個数: 16

約数和(自身を含む): 32552424

約数和(自身を除く): 11159918

約数列:

[1, 2, 157, 193, 314, 353, 386, 706, 30301, 55421, 60602, 68129, 110842, 136258, 10696253, 21392506]

約数ペア:

[(1, 21392506), (2, 10696253), (157, 136258), (193, 110842), (314, 68129), (353, 60602), (386, 55421), (706, 30301)]