21921412

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{443}}^1$

素因数の和:675

約数の個数: 24

約数和(自身を含む): 39160800

約数和(自身を除く): 17239388

約数列:

[1, 2, 4, 89, 139, 178, 278, 356, 443, 556, 886, 1772, 12371, 24742, 39427, 49484, 61577, 78854, 123154, 157708, 246308, 5480353, 10960706, 21921412]

約数ペア:

[(1, 21921412), (2, 10960706), (4, 5480353), (89, 246308), (139, 157708), (178, 123154), (278, 78854), (356, 61577), (443, 49484), (556, 39427), (886, 24742), (1772, 12371)]