21131188

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{1619}}^1$

素因数の和:1887

約数の個数: 24

約数和(自身を含む): 40007520

約数和(自身を除く): 18876332

約数列:

[1, 2, 4, 13, 26, 52, 251, 502, 1004, 1619, 3238, 3263, 6476, 6526, 13052, 21047, 42094, 84188, 406369, 812738, 1625476, 5282797, 10565594, 21131188]

約数ペア:

[(1, 21131188), (2, 10565594), (4, 5282797), (13, 1625476), (26, 812738), (52, 406369), (251, 84188), (502, 42094), (1004, 21047), (1619, 13052), (3238, 6526), (3263, 6476)]