20365168

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9157}}^1$

素因数の和:9304

約数の個数: 20

約数和(自身を含む): 39745720

約数和(自身を除く): 19380552

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9157, 18314, 36628, 73256, 146512, 1272823, 2545646, 5091292, 10182584, 20365168]

約数ペア:

[(1, 20365168), (2, 10182584), (4, 5091292), (8, 2545646), (16, 1272823), (139, 146512), (278, 73256), (556, 36628), (1112, 18314), (2224, 9157)]