21003957

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5791}}^1$

素因数の和:5841

約数の個数: 24

約数和(自身を含む): 33732608

約数和(自身を除く): 12728651

約数列:

[1, 3, 9, 13, 31, 39, 93, 117, 279, 403, 1209, 3627, 5791, 17373, 52119, 75283, 179521, 225849, 538563, 677547, 1615689, 2333773, 7001319, 21003957]

約数ペア:

[(1, 21003957), (3, 7001319), (9, 2333773), (13, 1615689), (31, 677547), (39, 538563), (93, 225849), (117, 179521), (279, 75283), (403, 52119), (1209, 17373), (3627, 5791)]