20790508

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{613}}^1$

素因数の和:817

約数の個数: 24

約数和(自身を含む): 37306640

約数和(自身を除く): 16516132

約数列:

[1, 2, 4, 61, 122, 139, 244, 278, 556, 613, 1226, 2452, 8479, 16958, 33916, 37393, 74786, 85207, 149572, 170414, 340828, 5197627, 10395254, 20790508]

約数ペア:

[(1, 20790508), (2, 10395254), (4, 5197627), (61, 340828), (122, 170414), (139, 149572), (244, 85207), (278, 74786), (556, 37393), (613, 33916), (1226, 16958), (2452, 8479)]