21000455284

素因数分解:

$2^2\times {\mathrm{42407}}^1\times {\mathrm{123803}}^1$

素因数の和:166214

約数の個数: 12

約数和(自身を含む): 36751960224

約数和(自身を除く): 15751504940

約数列:

[1, 2, 4, 42407, 84814, 123803, 169628, 247606, 495212, 5250113821, 10500227642, 21000455284]

約数ペア:

[(1, 21000455284), (2, 10500227642), (4, 5250113821), (42407, 495212), (84814, 247606), (123803, 169628)]