20831356

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{379}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 45283840

約数和(自身を除く): 24452484

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 151, 182, 302, 364, 379, 604, 758, 1057, 1516, 1963, 2114, 2653, 3926, 4228, 4927, 5306, 7852, 9854, 10612, 13741, 19708, 27482, 34489, 54964, 57229, 68978, 114458, 137956, 228916, 400603, 743977, 801206, 1487954, 1602412, 2975908, 5207839, 10415678, 20831356]

約数ペア:

[(1, 20831356), (2, 10415678), (4, 5207839), (7, 2975908), (13, 1602412), (14, 1487954), (26, 801206), (28, 743977), (52, 400603), (91, 228916), (151, 137956), (182, 114458), (302, 68978), (364, 57229), (379, 54964), (604, 34489), (758, 27482), (1057, 19708), (1516, 13741), (1963, 10612), (2114, 9854), (2653, 7852), (3926, 5306), (4228, 4927)]