20861510

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19139}}^1$

素因数の和:19255

約数の個数: 16

約数和(自身を含む): 37897200

約数和(自身を除く): 17035690

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 19139, 38278, 95695, 191390, 2086151, 4172302, 10430755, 20861510]

約数ペア:

[(1, 20861510), (2, 10430755), (5, 4172302), (10, 2086151), (109, 191390), (218, 95695), (545, 38278), (1090, 19139)]