19985090

素因数分解:

$2^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{19403}}^1$

素因数の和:19513

約数の個数: 16

約数和(自身を含む): 36324288

約数和(自身を除く): 16339198

約数列:

[1, 2, 5, 10, 103, 206, 515, 1030, 19403, 38806, 97015, 194030, 1998509, 3997018, 9992545, 19985090]

約数ペア:

[(1, 19985090), (2, 9992545), (5, 3997018), (10, 1998509), (103, 194030), (206, 97015), (515, 38806), (1030, 19403)]