20871556

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{281}}^1\times {\mathrm{599}}^1$

素因数の和:915

約数の個数: 24

約数和(自身を含む): 37900800

約数和(自身を除く): 17029244

約数列:

[1, 2, 4, 31, 62, 124, 281, 562, 599, 1124, 1198, 2396, 8711, 17422, 18569, 34844, 37138, 74276, 168319, 336638, 673276, 5217889, 10435778, 20871556]

約数ペア:

[(1, 20871556), (2, 10435778), (4, 5217889), (31, 673276), (62, 336638), (124, 168319), (281, 74276), (562, 37138), (599, 34844), (1124, 18569), (1198, 17422), (2396, 8711)]