28687820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{204913}}^1$

素因数の和:204929

約数の個数: 24

約数和(自身を含む): 68851104

約数和(自身を除く): 40163284

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 204913, 409826, 819652, 1024565, 1434391, 2049130, 2868782, 4098260, 5737564, 7171955, 14343910, 28687820]

約数ペア:

[(1, 28687820), (2, 14343910), (4, 7171955), (5, 5737564), (7, 4098260), (10, 2868782), (14, 2049130), (20, 1434391), (28, 1024565), (35, 819652), (70, 409826), (140, 204913)]