19493180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19891}}^1$

素因数の和:19914

約数の個数: 36

約数和(自身を含む): 47621448

約数和(自身を除く): 28128268

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 19891, 39782, 79564, 99455, 139237, 198910, 278474, 397820, 556948, 696185, 974659, 1392370, 1949318, 2784740, 3898636, 4873295, 9746590, 19493180]

約数ペア:

[(1, 19493180), (2, 9746590), (4, 4873295), (5, 3898636), (7, 2784740), (10, 1949318), (14, 1392370), (20, 974659), (28, 696185), (35, 556948), (49, 397820), (70, 278474), (98, 198910), (140, 139237), (196, 99455), (245, 79564), (490, 39782), (980, 19891)]